In vivo rupture of the imidazole ring of histamine.
D000818:Animals; D002245:Carbon Dioxide / Q000032:analysis; D002247:Carbon Isotopes; D006632:Histamine / Q000378:metabolism*; D007093:Imidazoles / Q000378:metabolism*; D012417:Rumen / Q000378:metabolism / Q000382:microbiology; D012756:Sheep
D002247:Carbon Isotopes; D007093:Imidazoles; D002245:Carbon Dioxide; D006632:Histamine