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  • Title: Fetal erythropoiesis following bone marrow transplantation.
    Author: Alter BP, Rappeport JM, Huisman TH, Schroeder WA, Nathan DG.
    Journal: Blood; 1976 Dec; 48(6):843-53. PubMed ID: 793650.
    Abstract:
    "Fetal" erythrocytes are present in older children and certain adults with hematologic disorders. To determine if regenerating bone marrow produces such cells, we examined the blood of seven allogeneic bone marrow transplant recipients. Six patients were engrafted with donor cells, while on e patients recovered autologous bone marrow after rejection of a marrow transplant. All seven patients had fetal hemoglobin levels of up to 10% by 100 days after transplant. In three patients, the Ggamma to Agamma ratio in the fetal hemoglobin was "newborn", while in one it was "adult". Gamma chain synthesis in blood and bone marrow never exceeded 20% of total non-alpha globin synthesis. The fetal hemoglobin was heterogeneously distributed in the cells. High titer i antigen also appeared. All fetal characteristics declined by 200 days. Erythropoiesis during bone marrow recovery appears to be associated with an accelerated, albeit partial, recapitulation of ontogeny.
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