Food and cyanide.
D001259:Ataxia / Q000139:chemically induced; D003486:Cyanides / Q000506:poisoning*; D004032:Diet; D005517:Foodborne Diseases; D006801:Humans; D002365:Manihot; D009422:Nervous System Diseases / Q000139:chemically induced; D014805:Vitamin B 12 / Q000378:metabolism
D003486:Cyanides; D014805:Vitamin B 12