Zusammenfassung der Ressource
T-LYMPHOCYTES
- CELL MEDIATED RESPONSE
- DO NOT produce antibodies
- Directly kill pathogens
- T-CELLS
- PLURIPOTENT MARROW CELL
- MATURE IN THE THYMUS GLAND
- HELPER, MEMORY, KILLER, SUPPRESSOR
- T-HELPER CELL
- Communication link
- Recognise the non self antigen that the macrophage presents
- stimulate B-CELLS to produce plasma cells
- B-CELLS cannot do this without T-HELPER CELLS
- EFFECTOR CELLS
- CYTOTOXIC KILLERS
- Attach body cells which have been affected with viruses, bacteria and fungi
- Kill the cell by recognition of the VIRAL PROTEIN COAT
- Secrete PERFORIN PROTEIN which can perforate the cell membrane (LYSIS)
- EFFECTOR AND MEMORY CELLS
- Once activated they divide rapidly - POLYCONAL EXPANSION
- T-SUPPRESSOR CELLS
- REGULATE the action of lymphocytes -
- Prevent the system from over reacting to stimuli
- T-KILLER CELLS
- Activated in the thymus
- Sensitised when they encounter an antigen
- Further development goes on in lymphatic tissues
- T-CELLS emerge with different functions emerge
- CYTOKINES
- Act as a signal between cells
- Primary role- immunoregulaton
- COMPLEMENT
- Assist antibodies to neutralise antigen
- When antibodies and complement attack antigen - IMMUNE COMPLEX