The complement system consists of thirty heat-labile proteins from plasma and is involved in the opsonization of pathogens for assisting the immune responses of the host. The complement proteins are protease in nature, which helps to cleave the antigens to neutralize the infectious substances. It is a cascade or a series of proteins (from C1 to C9 and some proteins are indicated as lower cases, a and b) that commence at the time of infection; the process is termed as complement activation.

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Chapter 16, Problem 1MCQ

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The complement system consists of thirty heat-labile proteins from plasma and is involved in the opsonization of pathogens for assisting the immune responses of the host. The complement proteins are protease in nature, which helps to cleave the antigens to neutralize the infectious substances. It is a cascade or a series of proteins (from C1 to C9 and some proteins are indicated as lower cases, a and b) that commence at the time of infection; the process is termed as complement activation.

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