Crossword Puzzle

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Across
  1. 2. This line of defense involves cells and tissues that help to protect the body
  2. 3. A type of white blood cell that destroys foreign substances, such as bacteria
  3. 5. A type of white blood cell that creates antibodies
  4. 6. Proteins made by plasma cells
  5. 8. Immunity a person naturally has without being exposed to the disease
  6. 11. This line of defense involves chemical and physical barriers to defend an infection
  7. 13. This type of immunity is when a person is given antibodies
  8. 15. This cycle involves viruses using a host cell to reproduce
  9. 16. These help to build immunity in a person for a disease in an artificial way
  10. 17. To be resistant to a particular disease or pathogen
  11. 18. This line of defense is when the immune system fights off pathogens it has seen before
  12. 19. These cells are made in bone marrow and help fight off infections and diseases
Down
  1. 1. A type of white blood cell that kills microorganisms and stimulates the action of other cells
  2. 4. This type of immunity triggers the body to produce antibodies
  3. 7. A person gets this type of immunity from intentionally being exposed to the disease
  4. 9. A drug that is used to treat infections that are cause by microorganisms such as bacteria
  5. 10. Any substance that causes the body to have an immune response
  6. 12. This cycle involves viral reproduction by fusing the DNA of the host with the virus
  7. 14. An infective agent that is a nucleic acid molecule with a protein coat
  8. 18. A type of white blood cell with the ability to recognize certain pathogens
  9. 20. A form of small white blood cell with a single round nucleus and is found in the lymphatic system