human human cell controlled study 232 Humans 222 article 216 priority journal 210 protein expression 136 nonhuman 122 unclassified drug 108 Animals 98 animal cell 96 metabolism 94 signal transduction 94 reverse transcription polymerase chain reaction 82 mouse 80 cell proliferation 78 Cell Line, Tumor 76 Article 72 Transcription, Genetic 70 Cell Line 68 messenger RNA 64 transcription regulation 64 Mice 62 apoptosis 62 female 62 gene expression 62 genetic transcription 58 promoter region 58 Western blotting 56 genetics 56