Across
- 2. A foreign substance that stimulates an allergic reaction
- 3. Chemical released in response to an injury
- 4. ability to destroy pathogens before they cause disease
- 5. The body's first line of defense against pathogens
- 8. substances produced by a virus-infected cell
Down
- 1. a localized physical condition in which part of the body becomes reddened, swollen, hot, and often painful.
- 4. A quick and general immune response you're born with
- 6. cells Cells that make antibodies
- 7. A sexually transmitted disease that kills T cells