immune system

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Across
  1. 3. Chemical messengers that regulate immune responses and cell differentiation.
  2. 4. Where T cells mature
  3. 5. Large phagocytic cells that engulf and digest foreign particles and cellular debris.
  4. 8. Any substance the immune system identifies as foreign and potentially harmful, triggering an immune response.
  5. 10. immunity: The body's non-specific, natural first line of defense against
Down
  1. 1. A localized physical condition characterized by redness, swelling, heat, and pain, which is the body's natural defensive response to injury or infection.
  2. 2. The most abundant type of white blood cell, which quickly responds to infection by engulfing pathogens.
  3. 6. An inappropriate immune response where the body mistakenly attacks its own healthy cells and tissues.
  4. 7. A type of lymphocyte that matures in the thymus gland and is involved in cell-mediated immunity.
  5. 9. Specialized Y-shaped proteins produced by B-cells that neutralize pathogens.