Which of the following is the immune system protein that fights foreign invaders?

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Multiple Choice

Which of the following is the immune system protein that fights foreign invaders?

Explanation:
Antibodies are the immune system proteins that fight foreign invaders. They’re Y-shaped immunoglobulins produced mainly by B cells that circulate in the blood and tissues. Each antibody binds to a specific antigen, neutralizing the invader or tagging it for attack by other immune cells. An antigen is the substance that triggers the immune response, not the protein itself. Erythema is just redness from inflammation, and gait is how someone walks, neither of which are immune proteins.

Antibodies are the immune system proteins that fight foreign invaders. They’re Y-shaped immunoglobulins produced mainly by B cells that circulate in the blood and tissues. Each antibody binds to a specific antigen, neutralizing the invader or tagging it for attack by other immune cells. An antigen is the substance that triggers the immune response, not the protein itself. Erythema is just redness from inflammation, and gait is how someone walks, neither of which are immune proteins.

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