procedures Animals 152 animal 152 Article 138 chemistry 132 nonhuman 124 metabolism 118 human 114 Humans 106 controlled study 94 physiology 72 priority journal 70 female 66 Female 60 male 58 Male 56 Argentina 52 genetics 50 drug effects 44 growth, development and aging 36 microbiology 36 biological model 34 article 32 Computer Simulation 30 adult 30 computer simulation 30 unclassified drug 28 mouse 26 Mice 24 fluorescence microscopy 24