Mammalian eggs are surrounded by two egg coats: the cumulus oophorus and the zona pellucida, which is an extracellular matrix composed of sulfated glycoproteins. The first association of the spermatozoon with the zona pellucida occurs between the zona glycoprotein, ZP3 and sperm receptors, located a
Inhibitory action of Xenopus dicalcin on sperm–egg interaction during fertilization
✍ Scribed by Naofumi Miwa; Motoyuki Ogawa; Yoshiki Hiraoka; Ken Takamatsu; Satoru Kawamura
- Book ID
- 116978157
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 75 KB
- Volume
- 344
- Category
- Article
- ISSN
- 0012-1606
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## Abstract Rat epididymal spermatozoa, at a concentration of 40–65 × 10^4^ cells/ml, were preincubated for 5–5.5 hr and then added to eggs from superovu‐lated, immature rats. By 10–12 hr after insemination, 86% of the eggs had undergone fertilization, but many of them (41%) were polyspermic. When