The allantoins.
D000328:Adult; D000368:Aged; D000481:Allantoin / Q000266:history / Q000627:therapeutic use; D005260:Female; D006801:Humans; D006827:Hydantoins / Q000266:history* / Q000627:therapeutic use*; D007223:Infant; D008297:Male; D012871:Skin Diseases / Q000188:drug therapy*
D006827:Hydantoins; D000481:Allantoin