Animalia article priority journal nonhuman 480 animal cell 292 controlled study 290 Animals 286 animal tissue 163 animal experiment 158 rat 135 female 132 Female 129 Male 125 Mice 122 mouse 120 male 117 Rats 113 Animal 98 Support, Non-U.S. Gov't 96 unclassified drug 76 protein expression 71 enzyme activity 70 Humans 66 animal model 59 signal transduction 54 Molecular Sequence Data 52 Rats, Sprague-Dawley 52 animal 51 metabolism 51 Mammalia 50