animal experiment human nonhuman controlled study 234 Animals 218 Humans 197 mouse 196 animal model 173 priority journal 163 human cell 152 Mice 150 article 150 animal cell 138 animal 134 female 118 protein expression 115 male 112 Female 111 unclassified drug 107 Article 102 animal tissue 100 metabolism 100 Male 89 in vivo study 82 in vitro study 77 genetics 61 pathology 60 cell proliferation 59 Mice, Inbred BALB C 48 Cell Line, Tumor 46