title: The significance of surface changes in parakeratotic horn.
mesh_terms: D001706:Biopsy; D006801:Humans; D007642:Keratosis / Q000473:pathology*; D008297:Male; D008855:Microscopy, Electron, Scanning; D008938:Mitosis; D009243:NAD / Q000378:metabolism; D012867:Skin / Q000201:enzymology / Q000473:pathology*
chemical_list: D009243:NAD