Immunoglobulin M A Is monomeric on B cell surface B Is a potent complement activator C Crosses placenta D Is predominant antibody in secretion E Is predominant antibody in secondary immune response Immunoglobulin M Correct Answer Is monomeric on B cell surface, Is a potent complement activator Bissoy MCQ Team Aug 26, 2023 Basic Science Diploma Medicine Paediatric Surgery Microbiology Immunology Immunoglobulin