Across
- 3. a soft, blood rich organ that filters blood
- 4. functions at peak levels only during youth
- 5. abnormally vigorous immune responses in which the imune system causes tissue damage
- 6. tissue grafts donated by a genetically identical person
- 8. process causes clumping of the foreign cells
- 9. collections of lymphocytes
- 11. chemicals that act indirectly to rid the body of antigens
Down
- 1. mixture of dead or dying neutrophils
- 2. occurs when antibodies bind to specific sites on bacterial exotoxins
- 7. small masses of lymphnoid tissue that ring the pharynx
- 8. a tubelike offshoot of the first part of the large intestine
- 10. an enzyme that destroys bacteria