Prchal, J T Congenital methemoglobinemia due to methemoglobin reductase deficiency in two unrelated American black families. [electronic resource] - The American journal of medicine Oct 1990 - 516-22 p. digital Publication Type: Case Reports; Journal Article ISSN: 0002-9343 Standard No.: 10.1016/0002-9343(90)90384-p doi Subjects--Topical Terms: AdolescentAdultCytochrome-B(5) Reductase--analysisErythrocytes--enzymologyFemaleHumansMethemoglobin--analysisMethemoglobinemia--congenitalMutationNAD--bloodSulfhemoglobin--analysis