We compared data taken at 1 and 10 m perpendicular to shoreline u

We compared data taken at 1 and 10 m perpendicular to shoreline using a linear regression analysis to determine coherence with distance. We tested for differences in the concentration of PAHs

in wetland soils categorized in the SCAT surveys using a one-way ANOVA, and tested for differences between oil and un-oiled sites using a Student’s t-test and a Tukey’s HSD post hoc test for significant differences, with an alpha = 0.05. We created box and whisker plots (minimum to maximum; 25th to 75th percentile) of the concentration of alkanes and aromatics for the three estuaries (Breton Sound, Barataria Bay and Terrebonne Bay) http://www.selleckchem.com/products/dabrafenib-gsk2118436.html that were sampled before the oil reached the marsh in May 2010. We divided Barataria Bay into east and west components using Grand Isle as the border and compared the concentrations of alkanes and aromatics in September 2010. We then used a Kruskal–Wallis non-parametric analysis to test for differences in the concentration of total alkanes and total aromatics among estuaries for all data in May 2010 and September 2010, and amongst sampling at the four Bay Batiste sampling trips to the same 30 sites. The total target alkane and PAH concentrations in the 405 samples ranged

from 0.4 to 8,640 mg kg−1, and from below detection limits (0.1 μg kg−1) to 355,744 μg kg−1, respectively. Samples with the lowest concentrations were collected during the pre-impact sampling in Afatinib May 2010, when the concentration of target alkanes and PAHs averaged 0.98 ± 0.005 mg kg−1 and 23.9 ± 1.61 μg kg−1, respectively. Some samples from May 2010 had measurable traces of petroleum in them, but no identifiable MC252 oil. We consider these May 2010 data to

be a baseline against which we compared oiling amounts from after the MC252 spill in 2010 and subsequent re-distributions. MC252 oil was detected in 34 of the 94 samples collected in September 2010 and February 2011. The average concentration of target alkanes and PAHs in these 34 samples was 991 ± 377 mg kg−1 and 29,977 ± 11,410 μg kg−1, respectively (Table 3). The average target alkane and PAH concentrations Glutamate dehydrogenase in the MC252 oiled wetlands was, therefore, over 1,015 and 1,255 times, respectively, the concentration of these alkanes and aromatics in the relatively un-oiled wetland sediments sampled in May 2010. All samples contained numerous alkanes, with some samples having obvious odd carbon preferences and others not. Samples with significant oiling contained normal alkanes with the typical pattern of alkanes, as well as the isoprenoid alkanes pristane and phytane seen in crude oils. Except for samples with highly elevated amounts of oil, many alkane patterns had biogenic and petrogenic source signatures. In general, the samples with low levels of alkanes exhibited a pattern associated with the various biogenic sources, with only some having odd carbon preferences. The average concentration of target alkanes within 1 m of the water’s edge for 91 paired samples was 37.3 ± 26.

The SFU count seen with co-culture of infected CKC with infected

The SFU count seen with co-culture of infected CKC with infected splenocytes was close to that seen with cells from infected birds stimulated with PMA/ionomycin (1060 ± 53 SPU/106 cells), suggesting that antigen specific antiviral IFNγ producing cells constitute the majority of those able to rapidly produce IFNγ. It was interesting to note that splenocytes from infected birds have greater SFU responses to PMA in our study (discussed below). To analyze the phenotype of the responding splenocytes from infected birds we performed intracellular

staining on cells from co-culture assays. We first validated antibody (EH9) against a previously published anti IFNγ antibody (mAb80, (Ariaans et al., 2008)) using IFNγ transfected CHO cell lines (Supplementary Fig. 4) and in splenocytes stimulated with PMA/ionomycin (Fig. 4A). There was FK506 price no statistically significant difference between results obtained with the two antibodies. Non-specific signal was not detected by isotype control staining (Fig. 4B). We then analyzed the phenotype of IFNγ expressing cells from infected birds, following co-culture with either infected or non-infected CKC. Data shown are for a representative sample from infected and non-infected birds (Fig. 4C) gating in the same FSC/SSC lymphocyte region (Fig. 4A) for all conditions. The greatest number of interferon gamma producing

cells was detected during co-culture of infected CKC with splenocytes from infected birds (0.517%), compared with splenocytes from infected birds co-cultured with non-infected CKC (0.069%), and splenocytes UK-371804 manufacturer from non-infected birds co-cultured with infected CKC (0.071%). It is important to note that the majority of IFNγ positive splenocytes from infected birds co-cultured with infected CKC were CD8 positive (> 60%, Fig. 4C). Having established the utility of the

co-culture ELISpot we used the technique to analyze influenza antigen specific responses in birds vaccinated (prime and boost) with recombinant Fowlpox (F9) or recombinant Fowlpox-NpM1 (F9-NpM1), and then challenged with an influenza virus with heterologous nucleoprotein and matrix protein. Instead of infecting the CKC with influenza virus we used recombinant MVA carrying either a GFP or NpM1 fusion transgene (homologous to 4-Aminobutyrate aminotransferase the Fowlpox recombinant) then irradiated the infected CKC as described. Three of the four F9-NpM1 vaccinated birds challenged with influenza showed IFNγ responses that distinguished them from F9 vaccinated and challenged birds (Fig. 5) (40.0 ± 12.5 vs. 3.0 ± 1.9, p < 0.05). The majority of responses in the F9-NpM1 vaccinated birds were greater with CKC infected with MVA-NpM1 fusion transgene. Some responses were also observed with F9-NpM1 vaccinated birds when APCs were infected with MVA-GFP (although this result was not significant).

Shi & Nof (1993) showed that such collision ultimately leads to t

Shi & Nof (1993) showed that such collision ultimately leads to the eddy splitting into two with opposing signs. Further south, it turns out that the sharp increase in the salt content of the BSW layer in summer 2001 produced limited west-orientated baroclinic currents ( Figure 12).

Considering these findings to be typical of the impact of the wind shear stress on the behaviour of sub-basin scale patterns in the North Aegean Sea, one may argue that check details strong southerly winds tend to displace the BSW-LIW frontal zone to the north of Lemnos Island, thus suppressing the anticyclone towards the Thracian Sea continental shelf. Under these conditions the system reduces its radius and deepens, increasing its surface elevation at the centre, leading to surface convergence and subsurface divergence associated with the halocline lowering due to downwelling effects. On the other hand, northerly winds tend to return the BSW-LIW front to its regular position (south of Lemnos Island), allowing the horizontal expansion of the Samothraki Anticyclone. Gyre horizontal expansion

favours surface slope reduction, leading to surface divergence and subsurface convergence, thus allowing isopycnals to gradually rebound towards the surface, causing upwelling. As low-density water in selleck screening library the upper part of the anticyclone moves radially outwards, it is replaced by deeper water moving upwards from the core of the eddy, which in turn is replaced by denser deep water moving radially inwards from the eddy margins. Carnitine dehydrogenase This mechanism has been suggested by several investigators (Pinot et al., 1995 and Mackas et al., 2005).

Strong winds from alternate north-to-south directions, lasting for a few days over the Aegean Sea, may cause such Samothraki Anticyclone suppression/expansion events, resulting in significant vertical movements within the system. These water movements could be responsible for the occurrence of lenses with cooler and saline (upwelled) or fresher and warmer (downwelled) water observed regularly in the water column (between 10–30 m depth) over the Thracian Sea continental shelf (Zervakis & Georgopoulos 2002). As the wind rapidly changes its orientation during the winter (Poulos et al. 1997), this mechanism could also support the occurrence of surface saline ‘tongues’, leading ultimately to deep water formation events along the Thracian Sea continental shelf, as reported by Theocharis & Georgopoulos (1993). A quantitative estimation of vertical velocity could be obtained following the quasi-geostrophic density equation procedure (Pinot et al.

Based on the initial concentrations proposed in Section 2 1 (whic

Based on the initial concentrations proposed in Section 2.1 (which were determined according to the reading range of the reflectometric assay in Section 2.2), the specific volumetric costs of the indicators would be, approximately, 40 US$/L for POD, 2200 US$/L for LPO and 0.25 US$/L for ALP. Therefore, the application of indicator LPO would be unjustified; especially considering the large dispersion seen in the parity chart in Fig. 2. Moreover, the low value of z1 of indicator

LPO ( Table 1) makes it too sensitive to temperature variations to be used as a good TTI. Indicators GSK-3 inhibitor POD and ALP were submitted to a slow discontinuous thermal treatment for validating the adjusted kinetic model, as described in Section 2.5. Fig. 4 presents the time-temperature curves obtained for indicator ALP, which are similar to the curves obtained for indicator POD. Fig. 5 compares the residual activity predicted by Eq. (6) with the experimental values obtained from the validation tests for indicator ALP. Since the distribution of the points in the parity chart is similar to the distribution seen in

Fig. 2 and no large discrepancies can be found in the residuals plot (predicted – measured), it is possible to validate the kinetic model adjusted for ALP. Indicator POD could not be validated, as can be seen in Fig. 6a. The experimental residual activity was much larger than the predicted activity. A new enzyme Cytidine deaminase batch for prepared buy EPZ015666 and all validation tests were repeated in order to confirm the discrepant behavior, and the same results were obtained (Fig. 6b). The thermal inactivation of POD showed distinct kinetics for fast heating and for slow heating conditions. This suggests that during slow heating, the POD enzyme suffers some sort of activation period. Authors have also detected activation of POD and other enzymes in thermal treatment (Martin et al., 2005 and Polakovič and Vrábel, 1996). Due to this behavior, the indicator POD is not suitable for practical use. From the three tested TTIs,

only indicator ALP showed potential to be actually used for the evaluation of continuous thermal processes under pasteurization conditions (70–80 °C). Its main advantages for practical use are: 1) the residual activity of the enzyme can be determined with an easily available commercial kit; 2) the specific cost of the TTI is low (0.25 US$/L); 3) the z-values of the thermostable and thermolabile fractions are very close to those of some microorganisms in liquid foods; and 4) this TTI can be considered as a multiple-response TTI because the thermostable and thermolabile fractions are inactivated in different conditions (different D-values). To improve the accuracy of the assessment, replicate measurements will be required.

In conclusion, we demonstrate that highly potent NS5A inhibitors

In conclusion, we demonstrate that highly potent NS5A inhibitors disrupt MW formation independent of RNA replication and, therefore, at a very early stage of the viral replication cycle. Although the exact impact of these drugs on NS5A structure remains to be determined, the block of biogenesis of the membranous HCV replication factory likely defines a major mode-of-action of these clinically highly promising direct-acting antiviral drugs. The authors thank Stephanie

Kallis and Ulrike Herian for excellent technical assistance, Jacomine Krijnse-Locker for help with electron microscopy, Simon Reiss for the HA-PI4KIIIα construct, and Charles Rice for the 9E10 antibody and Huh7.5 cells. The PI4KIIIα inhibitor AL-9 was kindly provided by Francesco Peri (Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy), Petra Neddermann, and Raffaele De LDK378 Francesco (INGM–Istituto

Nazionale Genetica Molecolare Romeo ed Enrica Invernizzi, Milano, Italy). The authors are grateful to the Electron Microscopy Core Facilities at EMBL Heidelberg and Bioquant and the Nikon Imaging Centre, Heidelberg, for providing access to their facilities and expert support. “
“Kirk Lin, Christopher F. Martin, Themistocles Dassopoulos, Silvia D. Degli Esposti, Douglas C. Wolf, Silvia D. Degli Esposti, Dawn B. Beaulieu, Uma Mahadevan. Pregnancy outcomes amongst mothers with inflammatory bowel disease exposed to systemic corticosteroids: results of the PIANO registry. Gastroenterology Lapatinib molecular weight 2014 146;5(Suppl 1):S1 In the above abstract, Lilani Perera should be listed as the 6th author. The citation should correctly be listed as: Kirk Lin, Christopher F. Martin, Themistocles Dassopoulos, Silvia D. Degli Esposti, Douglas C. Wolf, Lilani Perera, Dawn B. Beaulieu, Uma Mahadevan. Pregnancy outcomes amongst mothers with inflammatory Galeterone bowel disease exposed to systemic

corticosteroids: results of the PIANO registry. Gastroenterology 2014 146;5(Suppl 1):S1 “
“Gao Q, Zhao YJ, Wang XY et al. Activating mutations in PTPN3 promote cholangiocarcinoma cell proliferation and migration and are associated with tumor recurrence in patients. Gastroenterology 2014;146:1397–1407. In the above article, in the legend for Figure 2, panels (C), (D) and (E) show a detailed view of the residues A90, A211, and L232, respectively. Panel (F) displays the full-length model of PTPN3 protein shows that residue L384 is located in a disorder region between the FERM and PDZ domain. In the main text, on page 1400, Figure 2B should be cited as Figure 2B–E and Figure 2C should be cited as Figure 2F. Also, in Supplementary Figure 1, the validation rate currently listed as “48.4%” should be “51.7%.

As shown in Fig  5E–H, the peptide microarray can also be used to

As shown in Fig. 5E–H, the peptide microarray can also be used to map antibody binding patterns in two animal models commonly used in HIV-1 vaccine research: rhesus Alectinib in vitro macaques and guinea pigs (Nkolola et al., 2010, Barouch et al., 2012, Barouch et al., 2013 and Nkolola et al., 2014). In both examples, animals were vaccinated with 6 serial doses of clade C HIV-1 protein and developed a similar binding pattern, with peak responses at V3. The higher MFIs among vaccinated animals compared to humans are likely due to the increased number of boosts received by the animals. Of

note, naïve guinea pig samples demonstrated higher backgrounds than naïve human or monkey samples. While maps of antibody binding can provide a useful tool to visualize binding patterns, they are less useful for the quantitative comparison of groups or HIV-1 regions. To provide such quantitative data, we calculated U0126 the average MFI of peptide binding sorted by region and HIV-1 protein (Fig. 6A); magnitude can be compared across subjects or vaccine platforms as long as the dilution factor for the assay is kept constant, as was done in these experiments. As demonstrated in Fig. 6A,

the microarray can help characterize which regions of the HIV-1 envelope are preferentially targeted. For example, in HIV-1-infected subjects, V3-specific binding was significantly greater than to any other gp120 region (P < 0.02 for all comparisons by t-test) and CC loop-specific binding was greater than to any other gp41 region (P < 0.002 for all Dapagliflozin comparisons by t-test). In contrast, human

vaccinees did not show a preference for V3 or CC loop responses, although the vaccine included these antigens. It is also useful to know whether HIV-1-specific antibodies are binding to a limited region of the HIV-1 envelope or if multiple areas are targeted. Fig. 6B demonstrates the number of binding sites (“breadth”) by gp120 and gp41 region for our four groups of samples. Here, we can see that while the vaccinated human subjects had relatively low magnitude gp140 binding compared to HIV-1-infected subjects, there was no discernable difference in antibody breadth between the two groups. This ability to distinguish between magnitude and breadth is important in HIV-1 vaccine research. For example, if a particular vaccine candidate elicits low magnitude but broad antibody responses, then one might decide to change the vaccine vector or schedule to boost responses. On the other hand, if the vaccine candidate elicits high magnitude but narrow antibody responses, then one might decide to retain the same vector and schedule, but change the immunogen to broaden the specificity. We also developed the microarray to measure the cross-clade binding of HIV-1-specific antibodies. Fig. 6C demonstrates the mean number of epitope variants per binding site by gp120 and gp41 region for the four groups of samples.

1 ratio of pLNT–SFFV–WPRE–cDNA, the packaging plasmid psPAX2 and

1 ratio of pLNT–SFFV–WPRE–cDNA, the packaging plasmid psPAX2 and pMD2.G using calcium phosphate transfection. After 18 h medium was replaced with 6 ml fresh medium. Twenty four hours later, virus was harvested and new medium added for a final period of 24 h. Virus containing supernatants were stored at 4 °C, pooled and filtered through 0.2 μm. Virus stocks were concentrated 100 fold by centrifugation for 2 h at 25,000 rpm in a SW-28 rotor. The concentration procedure removed HEK293T medium which was detrimental to normal RBL-2H3 growth. Virus was resuspended in 0.01 volume RBL-2H3 medium supplemented with 20 mM Hepes pH 7.6, aliquotted click here and stored at −80 °C. Virus efficiency

was determined by titration on HEK293T and RBL-2H3 cells through fluorescence microscopy and western blot detection. RBL-2H3 cells stably expressing lentiviral constructs were made by infecting a 50% confluent 10 cm dish with

10 μl of concentrated virus in the presence of 6 μg ml−1 polybrene in 10 ml medium. Medium was replaced after 24 h and cells were allowed to expand for another 24 h. Cells were then cultured and evaluated for expression. Typical transduction efficiencies were 70%. Cells were collected after two weeks for FACS sorting and we sorted a 99% positive cell population of at least 5 × 105 cells using a FACSAria (BD). Cells were then transferred Selleckchem Bafilomycin A1 to 10 cm dishes for maintenance culture. Lentiviruses reverse transcribe their RNA and integrate the newly made DNA into the chromatin (Bukrinsky

et al., 1993). In our hands selection or resorting was not needed within 2 months after transduction, since expression levels remained constant during this period. If expression drops however, cells can easily be sorted as above to enrich for transfectants with higher expression. For Western blot, 1 × 106 RBL-2H3 cells were lysed in 250 μl 1% Triton X-100, 100 mM NaCl, 50 mM Tris–HCl pH 7.6. Lysates were cleared by centrifugation and collected in 5× Laemmli buffer containing 10% SDS, 50% glycerol, 0.625 M Tris–HCl pH 6.8, 250 mM DTT 0.01% Bromophenol blue. Samples were electrophoresed Docetaxel ic50 through 7.5% SDS-PAA gels and blotted on Immobilon-FL PVDF (Millipore). Blots were analyzed for munc13-4, YFP and actin using primary antibodies described above. Secondary alexa680 or IrDye800 fluorescent antibodies were used for detection in the Odyssey imaging system (Li-Cor). Antibody incubations were typically 45 min, followed by three washing steps in blocking buffer (Li-Cor). siRNA depletion of endogenous rat munc13-4 in RBL-2H3 cells was done through a sequence targeting the ORF of rat munc13-4; GGAACAAGAUUUUUCACAAtt (Applied Biosystems). The siRNA was introduced using AMAXA nucleofection (Lonza), 100 μl buffer T, protocol X-001 according to manufacturers’ instructions. 1 × 106 cells were transfected with 20 μl 20 μM oligo (400 pmol), seeded in 2 ml full medium in a 6 cm dish and grown for 48 h, knock-down efficiency was typically over 90%.

For example, for the above clinical examples, these observations

For example, for the above clinical examples, these observations were evident in anatomical, molecular, and/or functional imaging methods in vivo. In addition, tumor morphology in standard H&E stained tissue specimens may reflect the sum of all molecular pathways in tumor cells. It is therefore possible to postulate that by extracting quantitative disease-specific information across different scales of image data, different imaging phenotypes can be identified via association for different organ sites. To exploit this potential, efforts have already been directed to using data

presented in TCGA and TCIA. The information-rich content of both multiplex -omics click here platform assay datasets and modern digital images along with the accompanying complexity of metadata and annotations, however, poses new challenges for computational methods. Thus, increasingly sophisticated computational methods and archival storage capabilities to make the data accessible BIBF 1120 price and interpretable for the desired clinical context is necessary. A wide range of new computational methods are available for image analysis methods and data integration strategies in the published computer science and image processing

literature, which will not be reviewed here in the interest of space [56]. They include texture analysis methods, multi-resolution feature extraction methods such as wavelets, feature reduction methods, a range of statistical classifiers including semi-supervised and unsupervised clustering methods with the ability to differentiate tissues within the tumor bed, and modeling methods that address tumor heterogeneity. Finally, a number

of statistical methods for performance assessment of these methods have been reported. Perhaps the more important barrier to implementation of advanced computational image analysis methods is the critical need for annotated data across different resolution scales, as required to optimize and validate the performance of these different software tools and final clinical decision support systems. While image or molecular datasets are widely available (e.g., TCGA, TCIA, and other database resources [57], [58], [59], [60] and [61]), only a few of these datasets exist in a structured, next deeply annotated form. For example, while the shape of breast lesions in image scan help distinguish between benign and malignant lesions, to quantitatively assess lesion shape and type (e.g. via angularity or spicularity), segmentation of the lesion boundary is required. Progressing to using a wider range of features, including features extracted across different modalities, will clearly require a much higher level of deep annotation across different resolution scales invariably absent in most publicly available datasets. A further complication is that annotation is intrinsically specific to the scale of data being interrogated.

In contrast, if only few, e g two out of eight, skin samples are

In contrast, if only few, e.g. two out of eight, skin samples are affected, it

is a sign for per se impaired skin samples whose results need to be rejected. Furthermore, systematic errors could be evaluated. For instance, if higher skin temperatures or higher receptor flow rates are logged during an experiment, ISTD results in the historical range will argue against an effect of these variations on the test compound absorption or in other words will argue for a valid experiment. And finally a continuous test avoids any kind of pretreatment and elongation of the experiment which could alter the skin properties as outlined above (Buist et al., 2005). However, besides all these advantages, a continuous test is unsatisfactory as a stand-alone method. No preselection of skin samples is made, why impaired skin samples might be used. Belnacasan To avoid an insufficient number of valid skin samples for the entire study, we recommend a combined check details use of the binary standard test TEWL in advance of an experiment – which is able to identify the majority of defect

skin samples without pretreatment of the skin samples – and the outlined continuous ISTD approach – to evaluate effects observed during the absorption experiment. Since good correlations were observed for all skin preparation types (excised human, reconstructed human and excised rat skin), the ISTD approach is probably transferable to diseased skin or reconstructed diseased skin (Kuechler et al., 2011 and Oji et al., 2010) as well. However, an obstacle for the routine application of the ISTD approach is the need of a broad, publicly available, historical dataset. In theory, this dataset should be a matrix of various ISTDs with different physico-chemical properties applied under several experimental conditions. Compounds with various logP values and MWs should be included, since these properties

mainly determine their dermal absorption (Riviere, 2011). This mafosfamide would allow adjustment of the reference compound to the physico-chemical properties of the test compound in order to address the same pathway through the skin. However, to keep it practicable for routine application it is recommended to establish at least representatives for high, medium and low logP ranges. This would be in parallel to the suggested reference compounds stated in the guideline (caffeine, benzoic acid and testosterone) (OECD, 2004b) and cover different pathways through the skin. The ISTD with the logP value closest to the logP value of the test compound should be chosen for the experiment. That a certain distance is generally acceptable was shown in the current work. Since different conditions (like donor or receptor fluid) can influence the ISTD results (Kielhorn et al., 2006 and Schäfer and Redelmeier, 1996a) there is also a need to generate data under the relevant scenarios.

Eggs extracted from gravid females were examined under a microsco

Eggs extracted from gravid females were examined under a microscope at x1, x2, x4 and x6.3

using reflected light. Digital photographs of eggs were taken with a DS-Fi1 5.0-megapixel digital camera (Nikon, Japan). Embryonic development was defined according to the embryo development scale for PARP inhibitor the Chinese mitten crab given by Peters (1938) and for the blue king crab Paralithodes platypus given by Stevens (2006). Results were expressed as a mean with standard deviation (mean ± SD). The relationship between female carapace width and eggs wet weight was determined by linear regression analysis (y = ax + b) with a coefficient of determination R2 for a significance level P < 0.05. The carapace width of females (N = 22) collected in the Gulf of Gdańsk and Vistula Lagoon varied from 55.20 to 78.10 mm (mean 62.46 ± 5.09 mm). Detailed information on size, weight and gonad maturity stage of all the Chinese mitten crab females are given in Table 1. Most of the females (N = 17) were in the G4 gonad developmental stage; only four females had eggs on pleopods, thereby belonging to the G5 gonad developmental stage. The gonad maturity stage was not correlated with

female carapace width. The wet weight of eggs ranged from 12.16 to 31.00 g (mean 21.84 ± 8.75 g), which accounted for 17.9 ± 2.9% of the egg-carrying female weight on average. Eggs wet weight (EW) was significantly correlated (P < 0.05, R2 = 0.58) with female carapace width (CW) according to the equation EW = 2.16CW – 110.78. On the basis of photographs ( Figure 1) it was found that extracted embryos were between the Selleck PD-1 inhibitor initial phases of the 3rd and 4th developmental stages, and characterised by a lack of visible cells and structures. The embryonic lobes would probably become visible oxyclozanide in the following days. Based on the gonad maturity stage it is assumed that the females were shortly before (stage G4) or after (stage G5) copulation and the eggs were in the 3rd and 4th embryo development stage. According to Stevens (2006) the 3rd embryo stage in the blue king crab lasts about 114–156 days

after copulation, whereas the 4th stage lasts about 157–170 days. Thus, based on the sampling time (November/December) as well as on the embryo development stages one can assume that the examined egg-carrying females had copulated at least 3 months previously. The eggs were tightly attached to the female pleopods and extracting them for analysis was time-consuming. This is rather surprising, because the gravid females were collected at a salinity of 7 PSU. According to Peters (1938) and Panning (1939) the ‘cement-like’ substance that attaches the eggs to the egg-carrying setae does not harden at salinities lower than 14 PSU and females lose their eggs. Although Peters (1938) conducted some successful laboratory experiments with egg-carrying females at 6.5 PSU, to date no evidence of such a situation in a natural environment has been forthcoming.