T Cell Biology MHC molecules Major Histocompatibility Complex Found on plasma membrane Class i found on most nucleated body cells Class ii found only on leukocytes involved in immune response(macrophage, Ag presenting cells, B cells) Class i and Il Ag processed differently BIOL 533 Lecture 7BIOL 533 9 Lecture 7 T Cell Biology • MHC molecules – Major Histocompatibility Complex – Found on plasma membrane – Class I found on most nucleated body cells – Class II found only on leukocytes involved in immune response (macrophage, Ag￾presenting cells, B cells) – Class I and II Ag processed differently