Immune System

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Across
  1. 2. the antibodies that were produced gradually disappear from the blood, but they leave behind ________ lymphocytes
  2. 3. injecting, or administering orally, small amounts of dead or weakened antigens into the body.
  3. 6. immunity where the lymphocytes antibodies to fight the disease before symptoms develop a second time
  4. 8. cells that protect the body
  5. 9. help blood to clot;
  6. 10. Anything that is foreign or different and causes antibody formation is called
  7. 11. the body's first Line of defence. It acts as a physical barrier.
  8. 13. made by lymphocytes to attack, disarm, destroy and remove pathogens.
  9. 14. Antibodies can pass across the placenta providing a newborn baby with immunity
Down
  1. 1. recognise the specific pathogen and mobilise
  2. 4. immunity by vaccination at a suitable time in the person's life,
  3. 5. are all around us and includes viruses, bacteria, etc.)
  4. 7. type of injection given to promote long lasting immunization, taken after the first vaccination.
  5. 12. a person is this to a disease if, on infection with the disease, no symptoms develop.
  6. 14. type of white blood cells that engulf the invading microorganisms,