منابع مشابه
The schistosome egg: development and secretions.
We have investigated the development of the schistosome egg and its secretions in order to understand how it migrates through gut tissues and also initiates pathology in the liver. We show by electron microscopy that the subshell envelope is absent in the newly deposited egg, but appears very early and differentiates as development progresses. In the mature egg, this nucleated envelope contains...
متن کاملProteomic analysis of Schistosoma mansoni egg secretions.
Schistosomiasis remains a largely neglected, global health problem. The morbid pathology of the disease stems from the host's inflammatory response to parasite eggs trapped in host tissues. Long term host/parasite survival is dependent upon the successful modulation of the acute pathological response, which is induced by egg antigens. In this study, using Multidimensional Protein Identification...
متن کاملFertilization ecology of egg coats
reproductive risk of incomplete fertilization (Mortensen, 1938). Given evidence of at least occasional sperm limitation in marine environments (Levitan and Petersen, 1995; Yund, 2000), recent work has examined whether this risk is reduced by particular features of adults or gametes that could improve chances of sperm–egg encounter (Denny et al., 1992; Levitan et al., 1992; Petersen et al., 1992...
متن کاملGlycomics analysis of Schistosoma mansoni egg and cercarial secretions.
The parasitic helminth Schistosoma mansoni is a major public health concern in many developing countries. Glycoconjugates, and in particular the carbohydrate component of these products, represent the main immunogenic challenge to the host and could therefore represent one of the crucial determinants for successful parasite establishment. Here we report a comparative glycomics analysis of the N...
متن کاملThe egg cortex: from maturation through fertilization.
The peripheral layer of the egg has long been recognized as a region with special properties. Several types of experiments argue for the existence of an egg cortex (reviewed in Wilson, 1925; Chambers and Chambers, 1961; Hiramoto, 1970; Vacquier, 1981). We can cite in chronological order: micromanipulations of the egg with rods and micropipettes; low speed centrifugation experiments that stratif...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1921
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1536765