Animals article 339 nonhuman 275 priority journal 205 controlled study 196 animal 126 animal cell 105 mouse 101 Female 99 Mice 99 female 96 Humans 95 Male 95 animal experiment 93 Argentina 82 male 82 unclassified drug 76 human 73 animal tissue 59 genetics 49 Rats 47 animal model 46 physiology 46 protein expression 46 rat 43 Trypanosoma cruzi 36 metabolism 35 South America 34 human cell 33 Molecular Sequence Data 30