What is the primary purpose of irradiating blood components in selected patients?

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Multiple Choice

What is the primary purpose of irradiating blood components in selected patients?

Irradiation targets safety by inactivating donor lymphocytes to prevent transfusion-associated graft-versus-host disease. The radiation damages the DNA of donor T cells, stopping them from dividing and mounting an immune attack in the recipient. This is crucial for people with weakened immune systems, neonates, or patients who will receive stem cell–related treatments, where donor immune cells can react against the host. It’s not about sterilizing the product or changing its oxygen-carrying capacity or plasma components—the goal is to prevent a dangerous donor cell–driven reaction rather than altering the blood’s basic function.

Irradiation targets safety by inactivating donor lymphocytes to prevent transfusion-associated graft-versus-host disease. The radiation damages the DNA of donor T cells, stopping them from dividing and mounting an immune attack in the recipient. This is crucial for people with weakened immune systems, neonates, or patients who will receive stem cell–related treatments, where donor immune cells can react against the host. It’s not about sterilizing the product or changing its oxygen-carrying capacity or plasma components—the goal is to prevent a dangerous donor cell–driven reaction rather than altering the blood’s basic function.

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