TY - CHAP M1 - Book, Section TI - The Porphyrias A1 - Lichtman, Marshall A. A1 - Kaushansky, Kenneth A1 - Prchal, Josef T. A1 - Levi, Marcel M. A1 - Burns, Linda J. A1 - Linch, David C. Y1 - 2022 N1 - T2 - Williams Manual of Hematology, 10e AB - The porphyrias are inherited or acquired disorders due to altered activities of enzymes in the heme biosynthetic pathway. Metabolic intermediates are produced in excess, initially either in the marrow or the liver, and result in neurologic and/or photocutaneous symptoms and signs. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - hemonc.mhmedical.com/content.aspx?aid=1189333786 ER -