human human cell metabolism priority journal Humans 137 controlled study 128 Article 80 article 61 genetics 61 signal transduction 60 Animals 57 animal 57 nonhuman 53 protein expression 52 unclassified drug 50 female 49 physiology 48 cell line 45 Cell Line 43 in vitro study 43 animal cell 42 mouse 41 Female 38 Mice 37 Signal Transduction 35 cell proliferation 34 drug effect 34 immunology 33 Western blotting 32 apoptosis 32