MAP Kinase Signaling System signal transduction 62 controlled study 56 metabolism 48 article 46 human 46 Humans 44 priority journal 44 human cell 42 mitogen activated protein kinase 42 Animals 34 nonhuman 32 animal 28 Article 26 mitogen activated protein kinase 1 26 mouse 24 Mice 22 Phosphorylation 22 animal cell 22 enzyme activation 22 mitogen activated protein kinase 3 22 protein expression 22 Female 20 enzyme activity 20 enzyme phosphorylation 20 phosphorylation 20 Signal Transduction 18 gene expression 18 unclassified drug 18 Leptin 16