polyacrylamide gel electrophoresis priority journal article 96 nonhuman 78 controlled study 66 Animals 54 human 34 Electrophoresis, Polyacrylamide Gel 32 Western blotting 32 enzyme activity 32 Humans 30 unclassified drug 30 animal cell 28 protein expression 26 human cell 24 Blotting, Western 22 Mice 22 animal 22 metabolism 22 Animalia 18 Molecular Sequence Data 18 Trypanosoma cruzi 18 molecular weight 18 Amino Acid Sequence 16 Phosphorylation 16 RNA 16 Time Factors 16 enzyme activation 16 immunoblotting 16 immunoprecipitation 16