Abbreviation for hereditary erythroblastic multinuclearity associated with positive acidified serum. See H. cells, under cell.
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hereditary erythrocytic multinuclearity with positive acidified serum
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HEM·PAS (hemґpəs) [hereditary erythroblastic multinuclearity with positive acidified serum] the most common type of congenital dyserythropoietic anemia.Medical dictionary. 2011.