## Abstract Epididymal spermatozoa were maintained at 4Β°C during and after release from the epididymis to assess the effect of membrane fluidity on acquisition by the sperm of the ability to bind to zonae pellucidae of mouse eggs. The hypothesis to be tested was: If membrane fluidity is necessary f
Egg yolk enhances the receptiveness of zona pellucida to sperm binding
β Scribed by Deborah E. Johnson; Wendy J. Holmgren; Rajasingam S. Jeyendran
- Publisher
- Springer US
- Year
- 1994
- Tongue
- English
- Weight
- 236 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1573-7330
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Sheep eggs were obtained at appointed times from 4 to 16 hours after ovulation and examined for evidence of penetration by spermatozoa. The following observations were made: ( 1 ) The fertilizing spermatozoon makes a curved slit in the zona as a result of traversing it. The slit seems to be an open
## Contents Sperm binding and sperm penetration of the zona pellucida (zp) are regarded as speciesβspecific. In this investigation, the interactions between bovine oocytes and porcine, respectively, equine spermatozoa have been studied under __in vitro__ conditions and compared with the normal __in
## Abstract A major regulatory site for species specificity of fertilization in mammals lies at the level of sperm binding to the zona pellucida. This implies a high degree of complementarity between gamete receptor molecules. One putative receptor molecule on spermatozoa is proacrosin/ acrosin whi