Immune System

2. A nursing infant will receive this type of immunity from its mother's breast milk
5. Vasodilation and "leaky" vessels are caused by this.
9. Immune response that produces fewer antibodies at a slower speed
11. A sudden and severe drop in blood pressure (perhaps caused by an allergic reaction to a bee sting)
15. Programmed cell death
17. Where B cells originate
18. Y-shaped proteins that offer active immunity
21. Some B cells can develop into these cells that will produce antibodies
22. This is the body's "self marker" and is abbreviated MHC.
23. Chemical produced by white blood cells to produce a fever

1. When the body can't recognize self from non-self and wrongly attacks health tissue, this can result.
3. Swelling and redness, a response to tissue damage
4. Protein that punches holes in viral infected cells
6. A phagocytic cell that ingests foreign cells or material
7. Specialized white blood cells that kill infected cells or cancerous cells (also called killer T cells)
8. A vaccine will provide this type of immunity
10. Any foreign material that causes an immune response
12. These cells (which can last for decades) are responsible for the secondary immune response
13. Where B Cells mature
14. Where T cells mature
16. ______ defenses are non-specific and always deployed
19. A fever is part of this nonspecific immune response
20. Cells responsible for making antibodies