William E. Schreiber

All articles by William E. Schreiber


At a Glance The term porphyria refers to a group of disorders in which porphyrins (or their precursors) accumulate in body fluids and tissues. All but one of the porphyrias is hereditary. Each disease is caused by a partial deficiency in one of the enzymes of heme synthesis. With the exception of two very rare…

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