Across
- 2. regulate the activity of nearby cells
- 4. The study of internal defense systems of humans and other animals
- 5. causes capillaries to become more leaky
- 7. Immediate; general protection
- 8. the b in B cell stands for this
- 9. cells with long cytoplasmic extensions
- 10. produces new antibodies that match with only one type of antigen
- 16. the t in T cell stands for this
- 17. respond to intracellular parasites
- 18. the cell's way of eating
- 19. the tagging of the infection site
- 20. Y shaped proteins on the surface of cells
Down
- 1. dilation of blood vessels
- 3. large diverse group of peptides and proteins
- 6. the most common white blood cells
- 11. only active when they cluster with cells of the same type
- 12. must mature before it arrives
- 13. agents that affect the cells that produce them
- 14. makes small holes in the enemy
- 15. a rise in temperature