has subject area Biochemical Phenomena - MAP Kinase Signaling System Cell Physiological Phenomena - MAP Kinase Signaling System Epithelium - Hair Follicle Hair - Hair Follicle Metabolic Networks and Pathways - MAP Kinase Signaling System Nucleic Acids, Nucleotides, and Nucleosides - MicroRNAs RNA - MicroRNAs RNA, Small Untranslated - MicroRNAs Skin - Hair Follicle Skin Aging