title: Determination of cobalamins in biological material.
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange; D002855:Chromatography, Thin Layer; D004926:Escherichia coli / Q000032:analysis; D006801:Humans; D007201:Indicator Dilution Techniques; D011137:Polystyrenes; D013048:Specimen Handling; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D011137:Polystyrenes; C003771:Amberlite XAD-2 resin; D014805:Vitamin B 12