Across
- 3. A type of white blood cell produced by the thymus and involved in the immune response
- 4. A protein produced by B cells in the blood; works to impair pathogens. Also called an immunoglobulin
- 5. Anything that stimulates an immune response
- 9. Single celled microscopic animals, some of which act as parasites in humans
- 10. Specific immune defense mechanisms
- 12. An infectious protein
- 14. Parasitic worms, multicellular, use humans as hosts
- 15. Non-living particles with DNA or RNA that can infect living cells and use them to reproduce
Down
- 1. A substance used to stimulate an immune response with the goal of creating antibodies and providing immunity to specific infections
- 2. Single celled organism, prokaryotic, most are beneficial but some pathogenic to humans
- 6. Non-specific immune defense mechanisms that we are born with
- 7. A form of artificially acquired immunity that occurs when the majority of a population, but not all, has been given a vaccine and becomes resistant to infection
- 8. Eukaryotic cells, related to mushrooms, some cause infections in humans
- 11. A type of lymphocyte (white blood cell) that matures in bone marrow and produces antibodies
- 13. The ability to defend against a pathogen by preventing its entry and/or development or by neutralizing its pathogenic cellular products