Components Acquired Immunity,Lymphocytes,Antigen Presenting Cells (APCs),Immune System,Major Histocompability Complex(MHC)

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	Components Acquired Immunity Acquired immunity involves the following two major groups of cells: (1) lymphocytes and (2) antigen presenting cells (APCs). Lymphocyte possess antigen-binding cell surface receptors and are responsible for the specificity, diversity, memory and self/nonself recognition by the immune system.
In contrast, antigen presenting cells have on their surface class II MHC (major histocompability complex) molecules. These MHC molecules bind to antigen derived peptides and present them to a group of lymphocytes, which are them activated to mount the immune response.