CoproporphyrinsPorphyrinsUroporphyrinsCoproporphyrinogensPorphyriasLevulinic AcidsCoproporphyrinogen OxidaseProtoporphyrinsAminolevulinic AcidProtoporphyrinogen OxidasePorphyrinogensMeconiumHydroxymethylbilane SynthasePorphyrias, HepaticFerrochelataseUroporphyrinogensPorphobilinogen SynthaseHemeLeadMetalloporphyrinsChromatography, Thin LayerChromatography, High Pressure LiquidCopperSpectrometry, FluorescenceCytochromesFecesBacillus cereusZincSpectrophotometry