Immune System!

2. your most important nonspecific barrier
5. organ where T-cells are educated to only recognize non-self
9. this is the immune response that involves cells
10. these white blood cells engulf debris, cells, and pathogens
13. when B-cells are activated, they become this type of cell that secretes antibody
15. the level of antibody in your blood for a particular pathogen
17. these white blood cells are made in the bone marrow and secrete antibodies
18. these "natural ___" cells are voracious killers of tumor cells and infected cells

1. this is the immune response that produces antibody
3. most common white blood cell in serum
4. the acronym to remember the characteristics of inflammation
6. this membrane lines our openings to the outside world and catches antigens coming in
7. anything the body recognizes as YOU
8. this T-cell is critical to directing the attack of our immune system
11. anything the body recognizes as foreign
12. acronym for cells that have processed antigen and marked themselves
14. Y-shaped protein that attack antigen
16. after an infection, T-cells, B-cells, and Cytotoxic cells become this to "remember"