Humans animal tissue article nonhuman 115 Animals 113 controlled study 103 priority journal 94 animal experiment 83 Mice 72 mouse 70 human 62 animal model 61 animal cell 58 female 58 Female 57 protein expression 52 male 37 Male 36 Rats 35 rat 35 Cells, Cultured 31 human cell 30 unclassified drug 29 Cell Line, Tumor 27 cell proliferation 25 in vivo study 24 messenger RNA 24 Mice, Inbred BALB C 22 Rats, Sprague-Dawley 21 animal 21