article 6,344 ARGENTINA 6,190 Argentina 4,611 nonhuman 4,318 priority journal 3,593 Animals 3,310 controlled study 3,020 PROGRAMAS 2,475 human 2,141 HISTORIA 1,891 animal 1,853 Humans 1,753 male 1,604 unclassified drug 1,604 Arqueología 1,579 metabolism 1,556 female 1,529 Male 1,524 Female 1,493 animal experiment 1,405 MATERIA 1,311 South America 1,251 animal cell 1,246 POLITICA 1,151 SEGUNDO CUATRIMESTRE 1,137 AMERICA LATINA 1,103 HUMANIDADES 1,099 physiology 1,064 FILOSOFIA 996 chemistry 993