sperm penetrations การใช้

Freezing also creates a coating around the egg that limited sperm penetration.
Hormonal contraception works primarily by preventing ovulation, but it may also thicken the cervical mucus inhibiting sperm penetration.
A sperm penetration assay includes an acrosome reaction test that assesses how well a sperm is able to perform during the fertilization process.
While he was at the Worcester Foundation for Experimental Biology as a Dr . M . C . Chang's postdoctoral fellow ( 1960-1964 ), he witnessed and recorded the entire process of sperm penetration through the zona pellucida and fusion with the egg proper in living ( hamster ) egg, which was the first in mammals.