Humans article human nonhuman Animals 389 controlled study 329 priority journal 302 human cell 244 animal cell 221 unclassified drug 191 Mice 190 mouse 167 protein expression 132 animal 119 animal experiment 115 Female 112 metabolism 106 female 100 Male 93 animal model 86 Cell Line 83 male 83 physiology 71 Rats 69 in vitro study 67 Cell Line, Tumor 65 cell proliferation 64 animal tissue 62 protein function 60 rat 60