Langerhan's cells are:: (A) Phagocytic cells, (B) Antigen presenting cells, (C) Seen in auto immune conditions, (D) Seen in chronic infection
Answer is B. Answer is B (Antigen presenting cells) : Langerhan's cells are characteristic Antigen presenting cells Langerhan's cells are clear dendritic Q cells situated among the cells of stratum spinosum (slun). Q They are believed to be antigen processing cells. Q They are S100 positive Q on immunohistochemical studies. On electron microscopy: they lack melanosomesQ contain characteristic organelle, the Birbeck's granule.Q