Mice, Nude Animals 60 Mice 58 mouse 56 controlled study 52 nonhuman 50 article 48 Humans 44 nude mouse 42 animal model 40 human 40 animal experiment 38 cell proliferation 36 priority journal 36 animal 28 animal cell 28 human cell 28 in vivo study 26 protein expression 26 Cell Line, Tumor 24 Female 24 animal tissue 22 Gene Expression Regulation, Neoplastic 20 Neoplasm Transplantation 20 carcinogenesis 20 female 20 protein function 20 tumor growth 20 unclassified drug 20 Cell Proliferation 18