Sickle cell anemia is an inherited blood disorder.
Chronic destruction of red blood cells
Episodes of intense pain
Vulnerability to infections
In some cases, early death
Hemoglobin is a protein in red blood cells that carries oxygen. People with sickle cell anemia inherit a defective type of hemoglobin. When oxygen levels inside a red blood cell get low, the defective hemoglobin forms long rods. These rods stretch the red blood cells into long, abnormal "sickle" shapes. In contrast, normal red blood cells are disc-shaped.
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