title: Estimation of microbial nitrogen compounds entering the ruminant duodenum using different reference components including a 32P label.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001419:Bacteria / Q000378:metabolism; D002417:Cattle; D004386:Duodenum / Q000382:microbiology / Q000502:physiology*; D008297:Male; D009584:Nitrogen / Q000378:metabolism*; D012313:RNA / Q000378:metabolism*; D012417:Rumen / Q000382:microbiology
chemical_list: D012313:RNA; D009584:Nitrogen