title: Detection of vitamin B12 derivatives in serum by thin-layer chromatography and bioautograph technique.
abstract: The authors report a modified T.L.C. - bioautograph method for detection of vitamin B12 active compounds in serum. This method offers particular advantages because it allows the identification and the quantitative assay of picograms of vitamin B12 active compounds.
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods; D006801:Humans; D008832:Microchemistry / Q000379:methods; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12