male 65 Article 53 controlled study 51 nonhuman 50 Malaysia 49 Male 46 Animals 43 rat 43 animal experiment 42 human 42 Humans 35 animal 35 animal model 32 Public administration 31 animal tissue 29 female 28 Rats 27 priority journal 25 drug effect 24 metabolism 24 article 23 Rats, Sprague-Dawley 22 unclassified drug 22 chemistry 21 Female 19 Sprague Dawley rat 17 adult 17 plant extract 16 Plant Extracts 14 School administration and organization 14