controlled study pathology Article 56 metabolism 55 Humans 49 human 49 genetics 48 gene expression regulation 37 unclassified drug 34 human cell 33 male 33 human tissue 30 Gene Expression Regulation, Neoplastic 29 female 29 upregulation 27 Male 26 protein expression 26 Animals 25 Female 25 adult 25 animal 25 cell proliferation 25 nonhuman 25 gene expression 22 Cell Proliferation 21 Western blotting 21 animal experiment 21 down regulation 21 Cell Line, Tumor 19 middle aged 19