zona pellucida


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Related to zona pellucida: blastocyst, Granulosa cells
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Words related to zona pellucida

thick membrane around the mammalian ovum

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References in periodicals archive ?
Immunization with zona pellucida proteins results in abnormal ovarian follicular differentiation and inhibition of gonadotropin-induced steroid secretion.
Human sperm bound to the zona pellucida have normal nuclear chromatin as assessed by acridine orange fluorescence.
Anti-ZP Abs may give rise to follicle loss and premature ovarian failure because they impair zona pellucida formation in developing follicles and formation of gap junctions between the oocyte and granulosa cells (16,40).
But the sperm have to get through a protective membrane called the zona pellucida.
The interactions that occur between the sperm plasma membrane and the egg plasma membrane during binding and fusion are not completely understood, but they trigger the egg to release enzymes that modify the zona pellucida so that no other sperm can penetrate the zona.
Litscher, "Mammalian fertilization: the egg's multifunctional zona pellucida," The International Journal of Developmental Biology, 52, 5-6 (2008): 665; Paul M.
Ten conserved cysteine residues typically found in the zona pellucida domain containing proteins (Swanson et al.
Fatty acid composition of lipids in immature cattle, pig and sheep oocytes with intact zona pellucida.
Sperm-egg interactions in the mouse: sequence of events and induction of the acrosome reaction by a zona pellucida glycoprotein.
Background & objectives: An inability or decreased ability of spermatozoa to bind to the zona pellucida (ZP), an extracellular glycoproteinaceous matrix surrounding egg, is one of the plausible causes of idiopathic infertility.
This prevents other sperm from adhering to the cell membrane and allows enough time [5 minutes] for the organism to release calcium ions that harden the thick outer membrane, the zona pellucida that surrounds it.
Cytoplasmic processes project from the innermost layer of granulosa cells through the zona pellucida and form gap junctions with the oocyte membrane.
Fertilization in mammals is the ultimate outcome of a complex array of molecular events that allow the capacitated sperm to recognize and bind to oocyte extracellular coat, zona pellucida (ZP), to undergo acrosome reaction, and to fuse with oocyte plasma membrane [20, 23, 24, 25, 27].