animal tissue nonhuman 206 Animals 188 controlled study 180 priority journal 180 signal transduction 180 article 168 animal experiment 136 mouse 130 animal cell 120 Mice 112 Signal Transduction 102 Female 82 animal model 82 female 80 protein expression 80 male 78 Male 64 animal 56 metabolism 54 unclassified drug 54 rat 46 Humans 44 enzyme activity 44 Rats 42 messenger RNA 42 cell proliferation 38 Article 36 Mice, Inbred BALB C 36 human 36