title: Biology of hair growth.
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D002648:Child; D002675:Child, Preschool; D005260:Female; D006197:Hair / Q000254:growth & development* / Q000502:physiology; D006200:Hair Color; D006728:Hormones / Q000502:physiology; D006801:Humans; D007223:Infant; D007633:Keratins / Q000502:physiology; D008297:Male; D008544:Melanocytes / Q000502:physiology; D009747:Nutritional Physiological Phenomena; D051381:Rats; D012879:Skin Physiological Phenomena
chemical_list: D006728:Hormones; D007633:Keratins