title: Postprandial quantitative kinetics of urea and ammonia nitrogen exchanges between the digestive tract and the portal blood in conscious pigs receiving a diet with or without urea.
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D000818:Animals; D004064:Digestive System / Q000378:metabolism*; D004435:Eating; D005947:Glucose / Q000378:metabolism; D007700:Kinetics; D008102:Liver Circulation; D011169:Portal Vein / Q000502:physiology; D013552:Swine; D014508:Urea / Q000378:metabolism*
chemical_list: D000641:Ammonia; D014508:Urea; D005947:Glucose