protein expression controlled study 271 nonhuman 238 priority journal 236 article 226 Animals 196 human 192 Humans 175 animal cell 149 unclassified drug 137 human cell 129 mouse 126 metabolism 113 reverse transcription polymerase chain reaction 106 Mice 103 animal experiment 103 signal transduction 101 messenger RNA 100 female 94 Female 89 Article 88 animal 86 animal tissue 82 gene expression 73 genetics 72 cell proliferation 71 protein function 71 Signal Transduction 64 transcription factor 64 Western blotting 62