Results 161 to 170 of about 19,077 (217)

Ultrastructure of the spermatozoon of the oyster, Crassostrea virginica

Journal of Ultrastructure Research, 1960
Electron microscopy reveals the presence in oyster sperm of an axial body, a massive structure extending from the proximal area of the nucleus to the top of the acrosome. The location and structure of this body suggests that it is concerned with the formation and extrusion of the acrosome filament as described for several invertebrates.
P S, GALTSOFF, D E, PHILPOTT
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Experimental hexamitiasis in the oyster Crassostrea virginica

Journal of Invertebrate Pathology, 1968
Abstract In vitro growth characteristics of Hexamita sp. and course of experimental hexamitiasis initiated in oysters via the oral and intracardial route were used in an attempt to analyze the controversial issue of whether Hexamita is an oyster pathogen.
S Y, Feng, L A, Stauber
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Characterization of microsatellite loci in the eastern oyster, Crassostrea virginica

Molecular Ecology, 2000
Bonnie Brown, Patrick M Gaffney, Irv Kornfield   +2 more
exaly   +4 more sources

Nitrogen excretion of Crassostrea virginica

Comparative Biochemistry and Physiology, 1966
Abstract 1. Water in which groups of 6 oyster, Crassostrea virginica , had been held for 24 hr was analyazzed by standards methods for nitrogenous excretion products. 2. Results of the most complete analysis, expressed as μmoles ammonia/100g oyster/day, were: ammonia 12·50, urea 2·2.54, amino acids 1·01, unidentified 3·20, total 19·25.
C.S. Hammen, H.F. Miller, Wm.H. Geer
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A lectin on the hemocyte membrane of the oyster (Crassostrea virginica)

Cellular Immunology, 1984
Using antisera produced against a serum lectin we have shown by employing immunocytofluorescence that hemocytes from the oyster, Crassostrea virginica, possess a lectin which is situated on the external surface of the cell membrane. The antisera block the binding of hemocyte microsomes to protease-treated vertebrate erythrocytes, thus confirming that ...
G R, Vasta, T C, Cheng, J J, Marchalonis
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Polyspermy inhibition in the oyster, Crassostrea virginica

Journal of Experimental Zoology, 1983
AbstractInhibition of polyspermy is a critical response during fertilization which ensures that only one sperm nucleus will fuse with the female pronucleus to restore the diploid state. Oyster (Crassostrea virginica) eggs prevent polyspermy by a process occurring at the cell surface.
M C, Alliegro, D A, Wright
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Aconitase from the oyster Crassostrea virginica

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1982
1. The presence of aconitase activity in the oyster. Crassostrea virginica, has been demonstrated. 2. Low levels of activity were found in the different tissues with highest level in digestive diverticular and lowest level in muscle. 3. The conversion of both citrate and iso-citrate to cis-aconitate suggests the presence of an enzyme system capable of ...
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Accumulation of cadmium by the American oyster, Crassostrea virginica

Nature, 1976
CADMIUM is a major environmental pollutant potentially harmful to health, and if the sea becomes polluted with this metal there could be a reduction in extensive sources of food1. Seafoods constitute a source of cadmium in the human diet2 and in view of abundant evidence that shellfish accumulate trace metals3–6, it is important to investigate cadmium ...
G E, Zaroogian, S, Cheer
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Hemagglutinin in the blood of the oyster Crassostrea virginica

Journal of Invertebrate Pathology, 1966
Abstract A protein in the blood of normal oysters ( Crassostrea virginica ) agglutinates red blood cells of several vertebrate species. Adsorption tests indicate that this material has a moderate degree of specificity. It exerts an opsonic effect on rabbit red blood cells in vitro and probably influences the rate of phagocytosis of red cells and ...
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The Interactions of Vibrio vulnificus and the Oyster Crassostrea virginica

Microbial Ecology, 2013
The human bacterial pathogen, Vibrio vulnificus, is found in brackish waters and is concentrated by filter-feeding molluscan shellfish, especially oysters, which inhabit those waters. Ingestion of raw or undercooked oysters containing virulent strains of V. vulnificus can result in rapid septicemia and death in 50 % of victims.
Brett, Froelich, James D, Oliver
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