title: Electron spin resonance identification of melanin in comedones.
mesh_terms: D000152:Acne Vulgaris / Q000378:metabolism*; D002145:Callosities / Q000378:metabolism; D004578:Electron Spin Resonance Spectroscopy; D006197:Hair / Q000032:analysis; D006801:Humans; D008543:Melanins / Q000032:analysis*; D009262:Nails / Q000032:analysis; D010858:Pigmentation; D011565:Psoriasis / Q000378:metabolism; D012867:Skin / Q000032:analysis; D014860:Warts / Q000378:metabolism
chemical_list: D008543:Melanins