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Define ""sickle cell anemia

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Final answer:

Sickle-cell anemia is a genetic blood disorder where red blood cells take on a sickle or crescent shape, causing various issues. It is caused by the production of abnormal hemoglobin S.

Step-by-step explanation:

Sickle-cell anemia is a genetic blood disorder characterized by the production of an abnormal type of hemoglobin called hemoglobin S. This abnormal protein causes red blood cells to take on a sickle or crescent shape, especially in low oxygen concentrations. The sickle-shaped cells can block blood vessels, leading to a variety of serious problems such as pain, tissue damage, and organ dysfunction.

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