Humans controlled study 340 human 332 article 296 Animals 292 nonhuman 292 animal experiment 288 priority journal 262 female 216 Female 212 mouse 204 Mice 194 Male 188 male 188 animal model 174 animal cell 152 animal 132 adult 128 human cell 124 animal tissue 120 human experiment 120 protein expression 118 unclassified drug 106 Article 102 metabolism 100 physiology 96 Adult 94 in vivo study 80 normal human 72 cell proliferation 64