Antibodies part of the first line of defense, which brings white blood cells to the invader part of the third line of defense, which activates t-cells and b-cells part of the second line of defense, which causes a fever not part of the immune response

B and T group cells both distinguish to form memory cells after invigoration which refers long-term immunity to a specific virus. An antibody is a Y-shaped protein which is used by the immune system to define and overcome external objects like bacteria and viruses. They work as an antagonist of antigen in the human body.

alzheimer's disease;

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