| A number of factors act simultaneously to cause anemia | Field JJ , et al |
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| Overview of the management and prognosis of sickle cell disease | National Heart, Lung, and Blood Institute |
"Cytoprotective effects of the antioxidant phytochemical indicaxanthin in beta-thalassemia red blood cells".
14| FDA approves novel treatment to target abnormality in sickle cell disease | The levels of hematocrit also decline so erythropoietin response also diminishes resulting in anemia of prematurity |
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| Myelophthisic anemia is a very severe form of anemia where bone marrow is replaced by other materials like granulomas or malignant tumors | Disturbance of proliferation and maturation of erythroblasts is responsible for the appearance of pernicious anemia which is a form of megaloblastic anemia caused by vitamin B12 deficiency resulting in impaired vitamin B12 absorption |
Iron deficiency anemia also causes deficient heme synthesis.