unclassified drug controlled study 44 nonhuman 42 real time polymerase chain reaction 40 priority journal 34 Real-Time Polymerase Chain Reaction 32 article 32 human 26 Animals 24 Humans 24 messenger RNA 22 Article 20 Female 20 animal cell 20 animal experiment 20 animal tissue 20 mouse 20 protein expression 20 metabolism 18 reverse transcription polymerase chain reaction 18 human cell 16 Blotting, Western 14 Mice 14 gene expression 14 genetics 14 protein 14 signal transduction 14 DNA Primers 12 Male 12 Western blotting 12