TRUE about immunoglobulins is -: (A) IgE fixes complement, (B) IgM fixes complement, (C) IgG is found in minimum concentration, (D) IgG is elevated in primary immune response
Answer is B. IgM is paicularly effective at complement activation by binding to C1 Ref: Ananthanarayan & Parker's textbook of microbiology 9th edition pf:98