Immune System

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Across
  1. 3. organisms that cause disease
  2. 5. an example of organisms that take advantage of others
  3. 9. proteins responsible for humoral immunity
  4. 10. proteins that help viruses access human cells
Down
  1. 1. process of "eating" pathogens
  2. 2. one of the "messenger" cells
  3. 4. name of the 1st line of defence
  4. 6. most prominent barrier of the human body
  5. 7. a new vaccine that most of us have taken in 2021
  6. 8. cells responsible for cell-mediated immunity