gene expression real time polymerase chain reaction 36 controlled study 34 nonhuman 32 article 24 Animals 22 priority journal 22 messenger RNA 18 Male 16 animal cell 16 metabolism 16 protein expression 16 Article 14 Humans 14 Real-Time Polymerase Chain Reaction 14 genetics 14 unclassified drug 14 human 12 male 12 mouse 12 nucleotide sequence 12 Female 10 Mice 10 Western blotting 10 animal 10 animal experiment 10 animal tissue 10 cell proliferation 10 female 10 Cell Proliferation 8