Intrinsic FactorCobalt IsotopesAnemia, PerniciousVitamin B 12TranscobalaminsGastric JuiceSchilling TestCobalt RadioisotopesParietal Cells, GastricAnemia, MegaloblasticVitamin B 12 DeficiencyFactor IXaCobamidesMalabsorption SyndromesIntestinal SecretionsHydroxocobalaminCharcoalChief Cells, GastricAnemia, MacrocyticFactor VIIIaMethodsGastric FundusIntestinal AbsorptionFactor XIleumGastric MucosaEncyclopedias as Topic