Vaccination & Immunisation

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Across
  1. 3. an organism that causes a disease
  2. 5. proteins produced by a type of white blood cells called lymphocytes
Down
  1. 1. a line of defense that helps us fight bacterias and viruses
  2. 2. an adjective describing how a disease may spread
  3. 3. an infectious disease that can cause spinal and respiratory paralysis
  4. 4. an immune cell that engulfs and destroys bacterias