Scelta multipla
Opsonization resulting from the complement cascade is:
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19. Innate Immunity
Introduction to Innate Immunity
Scelta multipla
The alternative complement pathway is triggered:
A
exclusively during viral infections
B
by direct interaction with pathogen surfaces, independent of antibodies
C
by the binding of mannose-binding lectin to microbial carbohydrates
D
only after antibodies bind to antigens
Guida verificata passo dopo passo1
Understand that the complement system has three activation pathways: classical, lectin, and alternative.
Recall that the classical pathway is triggered by antibodies bound to antigens, so it is antibody-dependent.
Know that the lectin pathway is initiated by mannose-binding lectin binding to specific carbohydrates on microbial surfaces.
Recognize that the alternative pathway is unique because it is activated directly by pathogen surfaces without the need for antibodies or lectins.
Conclude that the alternative complement pathway is triggered by direct interaction with pathogen surfaces, independent of antibodies.
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