Colonialism & imperialism 65 Article 64 human 64 controlled study 52 Humans 49 nonhuman 40 National liberation & independence, post-colonialism 32 male 30 History 27 female 27 metabolism 25 colony formation 23 Male 22 cell proliferation 22 genetics 22 human cell 22 Animals 21 animal 21 colony forming unit 21 drug effect 20 adult 19 unclassified drug 19 Ant colony optimization 18 Australasian & Pacific history 18 Female 18 gene expression 18 pathology 18 Literary studies: post-colonial literature 17 mouse 17 African history 15