provides a strong linkage between the second and third lines of defense. O Complement activation O Interferon secretion O Defensin peptide O Host restriction factor
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The third line of defense is the adaptive immune system, which is a specific defense mechanism. Show more…
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Maitreya E.
Please select the INCORRECT statement about the components of the innate immune system. Multiple Choice Sentinel cells possess pattern recognition receptors that allow them to detect components such as peptidoglycan on invading microbial cells. Complement proteins circulate in the blood; they sense the presence of invaders, become activated and lead to the elimination of the invader. Pattern recognition receptors of sentinel cells are located only on the surface of those cells, allowing those cells to detect invasion of the host. First-line defenses include the skin and mucous membranes, antimicrobial substances that bathe them, and the normal microbiota. An effector action in response to invasion by a viral pathogen is the synthesis of interferon that warns neighboring cells about that invader.
Madhur L.
Each of the following is an effect of complement activation EXCEPT: - Enhances phagocytosis - Opsonization - Cytolysis - Interference with viral replication - Inflammation
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