BIOL 1003 Lecture Notes - Lecture 10: Cytotoxic T Cell, Natural Killer Cell, Syphilis
Document Summary
Red queen hypothesis due to evolutionary pressure of pathogens (cid:498)sex as an arm"s race(cid:499) How we defend ourselves from the predator within: Pathogens: bacteria (pneumonia, syphilis, viruses (hepatitis, rabies, chicken pox, protists, multicellular organisms, prions lines of defense, physical & chemical barriers. Get rid of pathogens: skin, sweat, tears, spit, mucus, pee, etc: nonspecific defense mechanisms inflammation, fever, interferons, natural killer cells, phagocytes, specific defense mechanisms. Lymphocytes immune response white blood cells: b cells produce antibodies, t cells attack foreign cells directly (killer t. Antigen foreign peptide, pieces of pathogens that triggers immune. Major histocompatibility complex (mhc) proteins complex of proteins unique to an individual that identify the individual"s own cells. Antibody protein that binds with antigen and targets it for degradation response (located on outer surface of a cell or virus) cells) or recruit (helper t cells) to attack. *both cells have memory forms that cause immunity.
