Process of Immunity (images)

Outer cortex containing follicles and an inner medulla. B, The location of B cells and T cells (stained red). C, A germinal center.

T cell receptor and its interaction with MHC molecule

Activation of B cells and the immunoglobulin molecule structure

Antigen presenting cells of the skin called dendritic cells

Natural killer cells: body’s innnate immunity and one of the first line of defence

Antigen processing and presentation on the surface of APCs with MHC I complex- causing activation of CD8 killer T cells.