Proteins make up the complement system Innate immune responses against invasive infections were once thought to include complement.
T cells can be divided into two primary classes: cytotoxic T cells and helper T cells. A virus or another intracellular pathogen is immediately eliminated by effector cytotoxic T lymphocytes.
Your immune system is a large network of organs, white blood cells, proteins (antibodies) and chemicals. This system works together to protect you from foreign invaders (bacteria, viruses, parasites, and fungi) that cause infection, illness and disease.
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