title: Letter: Bran hypothesis.
mesh_terms: D002482:Cellulose / Q000032:analysis; D004032:Diet; D002523:Edible Grain / Q000032:analysis*; D005247:Feeding Behavior; D005433:Flour / Q000032:analysis; D005638:Fruit; D006801:Humans; D014908:Triticum; D014675:Vegetables
chemical_list: D002482:Cellulose