Red Blood Cells: transports oxygen from the lungs to the rest of the body, , White Blood Cells: part of the immune system, help protect the body from foreign invaders and infectious diseases, , Regulatory Cells: regulate the immune system's response to foreign substances, regulating or suppressing other cells in the immune system, , Helper Cells: essential to the body's adaptive immune system, activate other immune cells to fight infections, , Killer T Cells: can destroy certain cells, including cancer cells, foreign cells, and cells infected with viruses, also known as Cytotoxic T cells, , Platelets: travel to the injured area and clump together to form a clot, clot acts as a plug, sealing the blood vessel and preventing excess blood from leaving the body, ,

Cells at Work

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