Multiple choice Autoantigen selection of responding B-cells is indicated by which of the following? Germ line configuration of the antibody High affinity of antibody Expression of a public idiotype A monoclonal antibody response A response to many different autoantigens Reveal answer Fill a bubble to check yourself B Correct answer Explanation The mutation of the antibody variable region genes in B-cells in the germinal centre produces a range of antibody affinities, and those B-cells bearing higher affinity antibody will be favourably selected for further stimulation by antigen.