Across
- 1. cytokine that blocks co-stimulatory signal
- 2. transfer of antibodies
- 5. occurs during B or T cells cluster their receptors in response to a pathogen
- 6. ___ T cells that do not express CD4, CD8, TCR
- 9. occurs in cells when they are killed by pathogens
- 12. helper T subset that recognizes parasites or pathogenic bacteria
- 14. lymphocytes that may undergo class switching and somatic hypermutation
- 15. amino acid region on antigen
- 18. process of testing T cells for MHC restriction
- 20. provides protection against T cells that may react against self-antigens
Down
- 1. keep immune system from overreacting to foreign antigens
- 3. immune cells which kill cells that do not contain class I MHC molecules
- 4. two igg molecules combined form this antibody
- 7. activates virgin T cells
- 8. protein displayed that come from outside the cell
- 10. antibodies that are also called gamma globulins
- 11. caused by mast cells degranulatin
- 13. released by CTL and binds to cell membrane and drills holes
- 16. blood valves that are specialized for lymphocytes to exit
- 17. display antigens to B cells
- 19. antibodies that are good at activating the complement cascade
- 21. cytokine that reduces T cell proliferation