Biology / Bio 3267 · Atom · ~20 seconds
The Complement System
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The complement system is a group of blood proteins activating in a cascade, marking pathogens for destruction, recruiting phagocytes, and sometimes puncturing a pathogen's membrane directly.
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Complement proteins coating a bacterium make it more readily engulfed by a passing phagocyte.
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Complement activation is nonspecific, distinct from the antigen-specific antibody tagging covered later in this chapter.