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  2. Beta thalassemia - Wikipedia

    en.wikipedia.org/wiki/Beta_thalassemia

    Cryopreserved red cells are used to maintain a supply of rare donor units for patients with unusual red cell antibodies or missing common red cell antigens. These regular transfusions promote normal growth and physical activities, and suppress bone marrow hyperactivity and extramedullary hematopoiesis, helping shrink painful masses in some ...

  3. Hemoglobin O - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin_O

    With HbS, there can be mild sickle cell trait but no symptoms. [13] [14] Hemoglobin O-Arab causes sickle cell disease in heterozygous (HbS/HbO) individuals. However, the symptomatic anemia is mild and is not life-threatening. It is even milder than in heterozygous sickle cell trait (HbS/HbA). [15] A case of sickle cell retinopathy is documented ...

  4. Hemoglobin - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin

    Hemoglobin SC disease – A compound heterozygous form with one sickle gene and another encoding hemoglobin C. Hemoglobin Hopkins-2 – A variant form of hemoglobin that is sometimes viewed in combination with hemoglobin S to produce sickle cell disease.

  5. Hemoglobin A2 - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin_A2

    Hemoglobin A2 (HbA 2) is a normal variant of hemoglobin A that consists of two alpha and two delta chains (α 2 δ 2) and is found at low levels in normal human blood.Hemoglobin A2 may be increased in beta thalassemia or in people who are heterozygous for the beta thalassemia gene.

  6. Hemoglobin subunit beta - Wikipedia

    en.wikipedia.org/wiki/Hemoglobin_subunit_beta

    In human, the HBB gene is located on chromosome 11 at position p15.5.. Hemoglobin subunit beta (beta globin, β-globin, haemoglobin beta, hemoglobin beta) is a globin protein, coded for by the HBB gene, which along with alpha globin (), makes up the most common form of haemoglobin in adult humans, hemoglobin A (HbA). [5]

  7. File:Sickle Cell Anemia and its Protection Against Malaria.svg

    en.wikipedia.org/wiki/File:Sickle_Cell_Anemia...

    English: In series A the red blood cell becomes sickled after interaction with the malarial merozoite, which then begins to multiply in the cell (schizont). Due to the heterozygous nature of the cell, and the hemoglobin inside it causing sickling, likely as a result of the lowering of the pH and deoxygenation, the cell can be targeted and eliminated by macrophages before the infection can ...

  8. Dominance (genetics) - Wikipedia

    en.wikipedia.org/wiki/Dominance_(genetics)

    Autosomal dominant and autosomal recessive inheritance, the two most common Mendelian inheritance patterns. An autosome is any chromosome other than a sex chromosome.. In genetics, dominance is the phenomenon of one variant of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome.

  9. Mutation - Wikipedia

    en.wikipedia.org/wiki/Mutation

    The accumulation of certain mutations over generations of somatic cells is part of cause of malignant transformation, from normal cell to cancer cell. [111] Cells with heterozygous loss-of-function mutations (one good copy of gene and one mutated copy) may function normally with the unmutated copy until the good copy has been spontaneously ...