Immune System

8. Foreign substances that trigger the attack of antibodies in the immune response.
9. Cells created in the thymus that produce substances that attack infected cells in the body.
12. A complex response system that protects the body from bacteria, viruses, and other foreign substances.
13. Some bacteria are beneficial: breaking down our food, gut health, and fights off harmful bacteria.
14. Specialized proteins that aid in destroying infectious agents.
15. The short-term immunity that comes from the antibodies from another person or animal.

1. Composed of a network of vessels, ducts, nodes, and organs. Provides defense against infection.
2. Immunity that is present before exposure and effective from birth.
3. Single-celled organisms that lack a nucleus; prokaryotes - diseases: strep throat, food poisoning, pneumonia.
4. A tiny, nonliving particle that invades and then reproduces inside a living cell.
5. Cells manufactured in the bone marrow that create antibodies for isolating and destroying invading bacteria and viruses.
6. Organisms that cause disease.
7. Found within the lymph node; they destroy bacteria, cancer cells, and other foreign matter in the lymphatic stream.
10. Contamination or invasion of body tissue by pathogenic organisms.
11. The immunities we acquire throughout our lives.
14. A form of immunity in which the body produces its own antibodies against a disease/infection.