title: Pre-intestinal disappearance of vitamin A in steers fed different levels of corn.
mesh_terms: D000018:Abomasum / Q000378:metabolism; D000821:Animal Feed / Q000032:analysis; D000818:Animals; D002417:Cattle; D002857:Chromium / Q000378:metabolism; D004355:Drug Stability; D007413:Intestinal Mucosa / Q000378:metabolism*; D010087:Oxides / Q000378:metabolism; D012417:Rumen / Q000378:metabolism; D012756:Sheep; D014801:Vitamin A / Q000378:metabolism*; D003313:Zea mays
chemical_list: D010087:Oxides; D002857:Chromium; D014801:Vitamin A