RNA, Small Interfering article 54 priority journal 52 human 50 small interfering RNA 48 controlled study 46 Humans 44 Animals 42 metabolism 40 nonhuman 40 human cell 34 unclassified drug 34 Mice 32 animal cell 30 animal 28 genetics 28 mouse 28 protein function 26 Cell Line 24 gene expression 20 physiology 20 signal transduction 20 protein expression 18 Signal Transduction 16 cell line 16 cell proliferation 16 messenger RNA 16 protein protein interaction 16 Cell Differentiation 14 Female 14