ABSTRACT
The immune system consists of two separate arms: cell-mediated immunity, which principally involves T lymphocytes, and humoral immunity, which involves
B lymphocytes and immunoglobulins (antibody production).1 A mature B lymphocyte will only secrete antibody once it has been stimulated by an antigen, at which time B cells divide, creating a population of plasma cells specific for the antigen. Then plasma cells produce only one type of immunoglobulin (Ig) for a specific function that may participate in the immune response by interacting with cellular components or activate the complement cascade to enable opsonization of bacteria.
