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. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: Mol Genet Metab. 2019 Jul 5;128(3):219–227. doi: 10.1016/j.ymgme.2019.07.002

Figure 1.

Figure 1.

Intermediates and enzymes of the heme biosynthetic pathway, the types of porphyria associated with altered activity of each enzyme. The four acute porphyrias are highlighted. Abbreviation: ALAD, δ-aminolevulinic acid dehydratase.