Which of the following immunoglobulin isotypes is the MOST efficient at initiating a complement fixation cascade?

Which of the following immunoglobulin isotypes is the MOST efficient at initiating a complement fixation cascade?

Which of the following immunoglobulin isotypes is the MOST efficient at initiating a complement fixation cascade?











A. IgG
B. IgE
C. IgM
D. IgD
E. None of the above













Answer: C