sperm penetration assay(redirected from hamster zona-free ovum test)
Also found in: Wikipedia.
sperm penetration assayA specialised fertility test that assesses sperm cell ability to fuse with (penetrate) an ovum (egg).
Human sperm are mixed with hamster eggs in vitro and the number of sperm that penetrate the egg (sperm capacitation index) is measured.
sperm penetration assay
A test to evaluate male fertility in which a sample of sperm is added to hamster eggs whose zona pellucida has been removed. The number of sperm that penetrate each egg is measured and compared to a normal value. Synonym: hamster zona-free ovum test
See also: assay