Immune System terms

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Across
  1. 3. Immunity that develops after a person is infected with a specific pathogen
  2. 4. Immune system cells that circulate in the blood to help fight infection
  3. 5. The ability of an organism to resist a particular infection
  4. 7. An organism that can cause disease
  5. 8. Milky fluid that carries immune cells through the lymphatic system
  6. 9. Can only reproduce in the cells of a living thing, can cause disease
  7. 10. A protein produced by the body's immune system when it detects antigens
Down
  1. 1. The immune protection a person is born with
  2. 2. A type of living unicellular microorganism, some can cause disease
  3. 3. A foreign substance which induces an immune response in the body
  4. 6. A complex system of cells and proteins that defend the body against infection