Animals animal experiment human nonhuman 218 controlled study 202 Humans 193 mouse 166 Mice 150 animal model 145 priority journal 141 animal 132 article 130 animal cell 120 human cell 120 Female 111 female 108 metabolism 100 protein expression 97 Male 89 unclassified drug 89 male 88 Article 82 animal tissue 80 in vivo study 72 in vitro study 65 genetics 61 pathology 58 cell proliferation 53 Cell Line, Tumor 46 Mice, Inbred BALB C 46