title: Nitrogen (15N) utilization and microbial protein synthesis in the rumen of urea fed cattle.
mesh_terms: D000284:Administration, Oral; D000641:Ammonia / Q000378:metabolism; D000818:Animals; D002417:Cattle / Q000378:metabolism / Q000382:microbiology*; D056890:Eukaryota / Q000378:metabolism*; D008297:Male; D009584:Nitrogen / Q000378:metabolism*; D014176:Protein Biosynthesis; D012417:Rumen / Q000378:metabolism / Q000382:microbiology; D014508:Urea / Q000008:administration & dosage / Q000378:metabolism*
chemical_list: D000641:Ammonia; D014508:Urea; D009584:Nitrogen