controlled study 76 male nonhuman 76 protein expression rat article 66 Animals 60 animal experiment 59 Male 58 priority journal 58 animal tissue 55 Rats 54 animal cell 40 Rats, Sprague-Dawley 30 animal model 30 messenger RNA 28 RNA, Messenger 19 immunohistochemistry 19 Rats, Wistar 17 cell proliferation 17 female 17 Humans 15 animal 15 human 15 unclassified drug 15 Gene Expression Regulation 14 Western blotting 14 Immunohistochemistry 13 enzyme activity 13 human cell 13