cortical granule

cortical granule

[′kȯrd·ə·kəl ′gran·yəl]
(cell and molecular biology)
Any of the round to elliptical membrane-bound bodies that occur in the cortex of animal oocytes, contain mucopolysaccharides, and participate in formation of the fertilization membrane.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Cortical granule staining was used to evaluate the cytoplasmic maturation of bovine oocytes.
Although we expected crushing force to increase at fertilization due to the cortical granule reaction, mean crushing force was significantly greater in unfertilized chorions than in fertilized chorions.
(2005) showed bovine oocytes cultured at 41[degrees]C did not have a compromise ability to undergo nuclear progression to MII or cytoplasmic maturation (cortical granule translocation to the oolemma).
The relation between ionized calcium and cortical granule exocytosis in eggs of the sea urchin Echinus esculentus.
In several studies, evidence was presented for the importance of cholesterol and other lipids that impart negative curvature in cortical granule fusion (reviewed in this issue by Abbenini et al., pp.
In a transmission electron microscopy (TEM) study of the formation of the fertilization envelope of Branchiostoma floridae, Holland and Holland (1989) demonstrated that this structure is always single and evidently forms by the organization of exocytosed cortical granule material on the inside of a vitelline layer.
The cortical granule serine protease CGSP1 of the sea urchin, Strongylocentrotus purpuratus, is autocatalytic and contains a low-density lipoprotein receptor-like domain.
It is the product of cortical granule exocytosis and subsequent chemical modifications that result in a hardening of the egg's surface (1).
Round cortical granules with an electron dense and round appearance arranged as a layer beneath the plasma membrane with most density between groups (Fig.
Minor changes at the structure of cortical granules were detected (Figs.