Transfer of urea nitrogen across the rumen wall.
D000641:Ammonia / Q000378:metabolism; D000818:Animals; D000983:Antipyrine / Q000378:metabolism; D006041:Goats / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism*; D012417:Rumen / Q000378:metabolism*; D012756:Sheep / Q000378:metabolism*; D014508:Urea / Q000378:metabolism*; D014510:Urease
D000641:Ammonia; D014508:Urea; D014510:Urease; D009584:Nitrogen; D000983:Antipyrine