Abstract
Abstract The results of starch block electrophoresis of normal adult hemoglobin in the various disease states has been reported. The slow-moving fraction, A2, is elevated in all patients so far studied with thalassemia. Some patients with Addisonian pernicious anemia also show an increase in this fraction. Cord blood contains very little A2. The A2 fraction has no correlation with the severity of the disease. The A2 fraction found on starch seems to be identical with the small, fast-moving component noted in the Tiselius apparatus at acid pH. Iron deficiency anemia of the acquired type tends to have a lower amount of A2 than normal, with an increase to average normal values after therapy.
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