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Multiple Choice

Which term describes cells that are part of the immune response?

Leukocytes are the white blood cells that form the immune response. They circulate in the blood and migrate to tissues to identify and neutralize pathogens. Different types handle different tasks: some are quick to attack invaders, others coordinate the broader immune response or produce antibodies. In contrast, erythrocytes carry oxygen, platelets help with clotting, and plasma is the fluid that carries nutrients and proteins, including antibodies, but the cells actively driving the immune defense are leukocytes.

Leukocytes are the white blood cells that form the immune response. They circulate in the blood and migrate to tissues to identify and neutralize pathogens. Different types handle different tasks: some are quick to attack invaders, others coordinate the broader immune response or produce antibodies. In contrast, erythrocytes carry oxygen, platelets help with clotting, and plasma is the fluid that carries nutrients and proteins, including antibodies, but the cells actively driving the immune defense are leukocytes.