title: [Determination of vitamin B 12 in combination with a liver extract using a chemico-microbiological method].
mesh_terms: D001681:Biological Assay; D002852:Chromatography, Ion Exchange; D004926:Escherichia coli; D008110:Liver Extracts / Q000032:analysis*; D014805:Vitamin B 12 / Q000032:analysis* / Q000302:isolation & purification
chemical_list: D008110:Liver Extracts; D014805:Vitamin B 12
vernacular_title: Dosaggio della vitamina B12 in associazione con estratto epatico mediante un metodo chimico-microbiologico.