Immune system

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Across
  1. 2. Your body's ability to destroy pathogens that it has previously encountered before the pathogens are able to cause disease
  2. 6. Carry out most of the immune systems functions
  3. 7. proteins that are attached to the surface of pathogens or to the toxins produced by pathogens
Down
  1. 1. Fights diseases by producing a separate set of weapons for each kind of pathogen it encounters
  2. 3. perform several functions
  3. 4. Produce antibodies
  4. 5. Is a network of vessels that collects fluid from your tissues and returns it to the bloodstream