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Bags designed for the storage and processing of red blood cells in blood cell transfusion washers. These bags typically consist of a flexible plastic (usually polyvinyl chloride [PVC]) container of either 800 or 1,000 mL capacity. The blood-filled bags are opened and submitted to a centrifugation and saline washing procedure to separate red blood cells from plasma. After the washing cycles are finished, other bags containing packed washed red cells are stored for transfusion; the cells should be used within 24 hours.
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