Across
- 4. both produce antibodies & attack viruses in the blood
- 6. engulf & digest damaged body cells and disease-causing agents
- 10. produced in the bone marrow along with white blood cells & platelets
- 11. filters dangerous particles out of the blood
- 12. attack cells that have been infected with viruses
- 15. clear, yellowish fluid that contains white blood cells & nutrients
- 16. attach to parasites & release substances to kill them
Down
- 1. disease where the immune system attacks cells that the body should normally protect
- 2. engulf & destroy bacteria & release enzymes that kill bacteria
- 3. cells with the main responsibility of defending the body against disease
- 5. body system that works to protect the body from foreign invaders
- 7. disease that causes white blood cells to never mature
- 8. lymph nodes found in the throat
- 9. identifying protein coatings on the surface of every cell
- 13. small bean-shaped masses that hold lymph fluid & filter out damaging particles
- 14. function in allergic reactions & release histamine