Immune System

4. A type of regulator cell that activates, or calls up, B cells to produce antibodies.
8. Specialized proteins that aid in destroying infectious agents.
10. function circulate the body, proliferate, and respond to eliminate subsequent invasion by same antigen. (2ndary response - takes less time, ~5 days)
11. A complex response system that protects the body from bacteria, viruses, and other foreign substances.

1. T cells that help the immune system by increasing the activity and stimulating the T cells
2. Found within the lymph node; they destroy bacteria, cancer cells, and other foreign matter in the lymphatic stream.
3. Foreign substances that trigger the attack of antibodies in the immune response.
5. Cells manufactured in the bone marrow that create antibodies for isolating and destroying invading bacteria and viruses.
6. Composed of a network of vessels, ducts, nodes, and organs. Provides defense against infection.
7. Organisms that cause disease.
9. Cells created in the thymus that produce substances that attack infected cells in the body.