animal cell nonhuman 288 signal transduction priority journal 249 controlled study 246 Animals 239 article 225 mouse 160 Mice 142 Signal Transduction 128 protein expression 116 animal 108 metabolism 104 animal experiment 101 animal tissue 96 human 95 female 91 Humans 89 unclassified drug 89 cell proliferation 75 animal model 73 human cell 73 Female 72 enzyme activation 70 rat 69 male 60 Animalia 59 messenger RNA 58 Rats 57 Article 56