human messenger RNA Humans 164 priority journal 142 article 134 controlled study 128 human cell 114 nonhuman 114 Animals 104 protein expression 100 unclassified drug 90 metabolism 80 RNA, Messenger 76 genetics 70 gene expression 58 signal transduction 56 animal cell 54 protein function 52 Mice 50 mouse 50 Cell Line, Tumor 46 Article 44 Female 44 animal 44 gene expression regulation 44 female 42 reverse transcription polymerase chain reaction 42 human tissue 40 male 40 upregulation 40