title: A modified in vitro spermatozoal penenetration test. I. Method.
mesh_terms: D002465:Cell Movement; D002582:Cervix Mucus; D003584:Cytological Techniques / Q000295:instrumentation*; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D008722:Methods; D013094:Spermatozoa / Q000166:cytology / Q000502:physiology*; D013594:Syringes