Which of the following statements about antibody activating the complement pathway is TRUE ?

Question

Which of the following statements about antibody activating the complement pathway is  TRUE ?

Accepted Answer

Complement must bind to two IgG molecules at a minimum

Answer

Complement must first bind to circulating IgG and then to surface of the pathogen

Answer

The antibody must first bind complement with its respective Fc receptor

Answer

Complement can only be triggered by the IgM antibody isotype

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