Immune System

3. a type of antimicrobial substance active against bacteria
4. a complex network of organs, cells and proteins that defends the body against infection, whilst protecting the body's own cells
7. a group of cells, tissues and organs that work together to protect the body
8. helps protect the body from infection and may help fight cancer
11. results when exposure to a disease organism triggers the immune system to produce antibodies to that disease
13. a type of cell within the body capable of engulfing and absorbing bacteria and other small cells and particles
14. a blood protein produced in response to and counteracting a specific antigen
16. the surface barriers that prevent the entry of pathogens into the body
18. when a bacteria is resistant towards an antibiotic
19. immunity that is naturally existing

1. specific resistance is the body's _______
2. provided when a person is given antibodies to a disease rather than producing them through his or her own immune system
3. a toxin or other foreign substance which induces an immune response in the body
5. a type of white blood cell that surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells
6. a mean by which the body is given immunity to a disease by intentional exposure to small quantities of it
9. helps the body fight infection and other diseases
10. a cell that is part of the immune system and helps the body fight infections and other diseases
12. a type of immune cell that is made in the bone marrow and is found in the blood and in lymph tissue
15. a type of white blood cell that makes antibodies
17. the act of introducing a vaccine into the body to produce protection from a specific disease