Immune System

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Across
  1. 3. immunity develops throughout our lives.
  2. 5. Some types of white blood cells,
  3. 7. system is the body's defense against infections.
  4. 8. One type of phagocyte that fights bacteria
  5. 10. Many cells and organs work together to protect the body. White blood cells,
  6. 11. prevent diseases
Down
  1. 1. activate a group of proteins
  2. 2. chew up invading organisms.
  3. 4. immunity is "borrowed" from another source and it lasts for a short time.
  4. 6. refers to the microscopic bacteria, viruses, fungi, and protozoa that can cause disease.
  5. 9. a type of general protection.