Cell-Mediated Immunity Flashcards
Cell-mediated immunity relies on what?
Activated T lymphocytes
Cell mediated immunity is important in combating what?
Viral and fungal infections
Potential cancer cells
T cells are activated by exposure to what?
Foreign antigens
Foreign antigens are bound by what?
Specific surface receptors
What are the 3 types of T lymphocytes?
Helper T lymphocytes
Cytotoxic (killer) T lymphocytes
Suppressor T lymphocytes
Helper T lymphocytes are most numerous and activated by what?
Macrophage processed antigens
Once helper T cells are stimulated what is released?
Lymphokines
Interlukin 2-6
Interferon
Cytotoxic (killer) T lymphocytes lyse cells carrying the antigens to which they are sensitive which are?
Lymphokine Activated Killer cells (LAK)
LAk cells are activated by what?
Lymphokines
Suppressor T lymphocytes inhibit what?
Lymphocytic Function
Cell mediated responses persist longer than what?
Antibody responses