Immune Systems

4. _____ acquired immunity happens when exposure to a disease triggers the immune system to produce antibodies to that disease.
5. _____ cells are the cells of the immune system that are protect the body against infectious diseases.
9. cells that protect the body by ingesting harmful foreign particles, bacteria, and dead or dying cells.
10. _____ immunity is when the body is given immunity to a disease by intentional exposure to small quantities of it.
11. the _____ line of defense is a group of cells, tissues and organs that work together to protect the body.
12. the _____ line of defense includes physical and chemical barriers, like the skin, that are always ready and prepared to defend the body from infection.
13. the _____ line of defense is specific resistance.
14. the _____ system is a network of organs, cells and proteins that defends the body against infection.
15. a type of white blood cell that helps your immune system fight germs and protect you from disease.
17. a type of white blood cell that makes antibodies.
18. the protection your body creates against a germ once you've been infected with it.

1. proteins produced by the immune system in response to infection.
2. a type of white blood cell that surrounds and kills, removes dead cells, and stimulates the action of other immune system cells.
3. a type of immune cell that is made in the bone marrow and is found in the blood and in lymph tissue.
6. antibiotic _____ occurs when bacteria change in response to the use of medicines.
7. introducing a vaccine into the body to produce protection from a specific disease.
8. _____ acquired immunity happens when a person is given antibodies to a disease rather than producing them through their own immune system.
16. immune _____ help the body fight infections and other diseases.