Answer:
Sickle cell disease is a condition in which red blood cells are not shaped as they should be. Red blood cells usually look like round discs. But in sickle cell disease, they're shaped like crescent moons, or an old farm tool known as a sickle.
These sickle shaped cells get stuck together easily, and block off small blood vessels. When blood can't get to where it should, it can lead to pain and organ damage.
Explanation:
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