Male male 30 article 28 Molecular Weight 24 Animals 20 molecular weight 20 nonhuman 20 priority journal 20 controlled study 18 animal tissue 14 Animal 12 Immunohistochemistry 12 Molecular Sequence Data 12 Rats 12 Support, Non-U.S. Gov't 12 Western blotting 12 animal 12 animal experiment 12 human 12 Spermatozoa 10 Testis 10 animal cell 10 human cell 10 Amino Acid Sequence 8 Base Sequence 8 Electrophoresis, Polyacrylamide Gel 8 Human 8 Mice 8 female 8 metabolism 8