Western blotting real time polymerase chain reaction 42 controlled study 36 nonhuman 28 human 24 protein expression 24 Animals 22 metabolism 22 priority journal 22 animal experiment 20 article 20 Article 18 Humans 18 messenger RNA 18 signal transduction 18 animal cell 16 animal tissue 16 genetics 16 mouse 16 animal 14 Real-Time Polymerase Chain Reaction 12 animal model 12 cell proliferation 12 down regulation 12 human cell 12 protein function 12 reverse transcription polymerase chain reaction 12 unclassified drug 12 upregulation 12 Blotting, Western 10