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Normal red blood cells move easily through blood vessels, taking oxygen to every part of your body.
People who have sickle cell disease have mostly sickled red blood cells. These cells can get stuck and block blood flow through a blood vessel. That means red blood cells and oxygen can't flow to some parts of the body.
Last Revised: October 1, 2012
Author: Healthwise Staff
Medical Review: E. Gregory Thompson, MD - Internal Medicine & Martin Steinberg, MD - Hematology
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