B-Lymph Development -3
•Characteristics of Stages in B lymphocyte development: cont=d
•eActivated B lymphocytes
•Umature B lymphocytes that have come in contact with a specific antigen
•Ucells proliferate, differentiate into plasma cells
•Uclass switching of heavy chains may occur resulting in production of all isotypes of Ig=s
•ePlasma cells
•Usecrete IgM and IgD
•Uexpress less surface IgD and IgM
•Uclass switching by activated B lymphs may result in production of all isotypes of Ig=s by plasma cells