Epididymis 12 Male 12 epididymis 12 Human 8 Sperm Maturation 8 Support, Non-U.S. Gov't 8 Animal 6 Female 6 article 6 human 6 human cell 6 male 6 spermatozoon maturation 6 Fertilization 4 Glycoproteins 4 Hamsters 4 Middle Age 4 Molecular Weight 4 Proteins 4 Spermatozoa 4 Support, U.S. Gov't, P.H.S. 4 adult 4 animal 4 fertility 4 male genital system 4 molecular weight 4 nonhuman 4 priority journal 4 spermatozoon 4 Acetylglucosaminidase 2