comparative study article 448 Animals 256 animal 240 nonhuman 170 metabolism 168 controlled study 160 priority journal 158 physiology 142 human 132 female 128 Argentina 124 male 124 Male 118 Female 116 Humans 116 genetics 92 growth, development and aging 90 Article 82 drug effect 82 chemistry 80 isolation and purification 62 unclassified drug 62 Species Specificity 60 Comparative Study 58 species difference 58 mouse 54 adult 52 methodology 52 Mice 50