− | These are dentritic cells derived from [[Bone Marrow - Anatomy & Physiology|bone marrow]]. They act as ''antigen presenting cells'' in the epidermis as part of the mononuclear phagocyte immune system. Langerhans' cells express MHC I and II molecules and immunoglubulin Fc receptors and are a key feature of '''delayed hypersensitivity responses.''' | + | These are dentritic cells derived from [[Bone Marrow - Anatomy & Physiology|bone marrow]]. They act as [[Peyer's Patches - Anatomy & Physiology#M cells|antigen presenting cells]] in the epidermis as part of the mononuclear phagocyte immune system. Langerhans' cells express MHC I and II molecules and immunoglubulin Fc receptors and are a key feature of '''delayed hypersensitivity responses.''' |