animal model controlled study nonhuman 194 priority journal protein expression animal experiment 185 Animals 161 article 156 mouse 146 Mice 124 animal tissue 124 animal cell 117 female 103 Female 82 male 82 Humans 75 human 67 Male 58 cell proliferation 53 animal 51 in vivo study 49 rat 49 human cell 46 metabolism 45 unclassified drug 43 Article 38 Mice, Inbred C57BL 38 Rats 38 Mice, Inbred BALB C 37 immunohistochemistry 37