Immune system

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