immune system

5. a type of cell within the body capable of engulfing and absorbing bacteria and other small cells and particles.
8. when a person is given antibodies to a disease rather than producing them through his or her own immune system.
10. a blood protein produced in response to and counteracting a specific antigen.
11. A complex network of cells, tissues, organs, and the substances they make that helps the body fight infections and other diseases.
13. a mean by which the body is given immunity to a disease by intentional exposure to small quantities of it.
17. the lymphocytes that produce antibodies to specific antigenic fragments.
18. physical and chemical barriers that are always ready and prepared to defend the body from infection
19. A type of white blood cell that surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells.
20. treatment with a vaccine to produce immunity to a particular infectious disease or pathogen.
21. key player of the adaptive immune response that is responsible for humoral immunity in mammals.

1. a group of cells, tissues and organs that work together to protect the body.
2. Immunity that is naturally existing, Natural immunity does not require prior sensitization to an antigen.
3. happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them
4. an infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.
6. a form of small leukocyte (white blood cell) with a single round nucleus, occurring especially in the lymphatic syst
7. a medicine (such as penicillin or its derivatives) that inhibits the growth of or destroys microorganisms.
9. results when exposure to a disease organism triggers the immune system to produce antibodies to that disease.
12. a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
14. A complex network of cells, tissues, organs, and the substances they make that helps the body fight infections and other diseases
15. part of the immune system and develop from stem cells in the bone marrow.
16. A type of blood cell that is made in the bone marrow and found in the blood and lymph tissue.