Cell-mediated immunity Flashcards
what is cell-mediated immunity?
T lymphocytes react to virus infections which have affected the cells of the organism internally
what are cell-mediated responses used against?
viruses and early cancers
what do the macrophages do in cell-mediated immunity?
macrophages engulf and digest the pathogen in phagocytosis
how is an APC formed?
the antigens of the pathogen which was engulfed by the macrophage are processed to form antigen-presenting cells
what binds to the antigens on the APC?
T helper cells
what do the T helper cells do once they have binded to the APC?
receptors on T helper cells fit the antigens on the APC which causes the T helper cell to activate and produce interleukins which causes more T cells to divide by mitosis and form clones of the activated T helper cell
what do the cloned T cells do?
he cloned T cells:
- develop into T memory cells
- produce interleukins to stimulate phagocytosis
- produce interleukins to stimulate division of B cells
- stimulate development of clones of T killer cells
