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A platelet is the smallest type of blood cell. Platelets are the
body's first defense against bleeding, helping the blood to clot (coagulate) by
collecting at the site of a wound and clumping together to help stop the flow
People with very low levels of platelets or who have bleeding disorders
may need to have transfusions of platelets to prevent excessive
Current as of:
August 21, 2015
E. Gregory Thompson, MD - Internal Medicine & Joseph O'Donnell, MD - Hematology, Oncology
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