1 A thin dark line located in the center of the A band. Contains M proteins that interconnect myosin filaments. Macrophage 23 Regulates the immune response.
Presents antigens to lymphocytes.
Originates from blood monocytes. The best phagocyte in the body. Closely related to dendritic cells of immune system. Presents antigens to lymphocytes. Originates from blood monocytes.