spermatozoon Male 80 male 80 Spermatozoa 72 article 64 priority journal 58 controlled study 54 human 48 nonhuman 46 Animals 40 animal cell 34 human cell 32 female 30 Female 26 Humans 26 animal 26 Sperm Capacitation 22 Support, Non-U.S. Gov't 22 epididymis 22 fertilization 22 in vitro study 22 spermatozoon motility 22 Glycoproteins 20 animal experiment 20 physiology 20 sperm 20 Epididymis 18 male genital system 18 spermatozoon capacitation 18 Fertilization 16