Immune System

2. Being protected from a pathogen by immunity gained from someone else.
4. A type of blood cell that is made in the bone marrow and found in the blood and lymph tissue.
8. A drug used to treat infections caused by bacteria and other microorganisms.
9. A type of white blood cell.
13. Happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them.
14. A cell that is part of the immune system and helps the body fight infections and other diseases.
17. Cells tailor made to get rid of the specific microorganisms that have invaded your tissue.
18. A protein made by plasma cells in response to an antigen.
19. Any substance that causes the body to make an immune response against that substance.
20. When the body is given immunity to a disease by intentional exposure to small quantities of it.

1. A group of cells, tissues and organs that work together to protect the body.
3. A type of immune cell that is made in the bone marrow and is found in the blood and in lymph tissue.
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. Physical and chemical barriers that are always ready and prepared to defend the body from infection.
7. A type of white blood cell that makes antibodies.
10. The reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell.
11. A type of immune cell that can surround and kill microorganisms, ingest foreign material, and remove dead cells.
12. An infectious microbe consisting of a segment of nucleic acid (either DNA or RNA) surrounded by a protein coat.
15. Acquired from exposure to the disease organism through infection with the actual disease.
16. A method by which a virus can replicate its DNA using a host cell.