title: A method f the estimation of nanogram amounts of cobamides and cobinamides in sheep rumen contents.
mesh_terms: D000577:Amides / Q000032:analysis; D000588:Amines / Q000032:analysis; D000818:Animals; D001681:Biological Assay; D004926:Escherichia coli / Q000378:metabolism; D007478:Iontophoresis; D008722:Methods; D012417:Rumen / Q000032:analysis*; D012756:Sheep; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D000577:Amides; D000588:Amines; D014805:Vitamin B 12