article 126 controlled study protein expression 126 nonhuman 102 priority journal 92 Animals 88 animal cell 72 mouse 54 Humans 50 Mice 50 human 44 protein function 44 unclassified drug 44 animal experiment 36 human cell 36 metabolism 34 signal transduction 30 animal 28 animal model 26 enzyme activity 26 male 26 messenger RNA 26 Female 24 Protein Binding 24 animal tissue 24 protein protein interaction 24 Cell Line, Tumor 22 Male 22 Western blotting 22 apoptosis 22