Across
- 2. a substance that causes your immune system to produce antibodies against it.
- 5. a way of preventing disease by making the body respond as if it has already been infected
- 6. the disease causing organism
- 8. a type of white blood cell that makes antibodies to attack the pathogen
- 9. chemicals produced by lymphocytes to defend against infection by pathogens
Down
- 1. a chemical that kills bacteria
- 3. a type of white blood sell that engulfs and destroys pathogens
- 4. an unhealthy state where something bad happens to the body or mind. These can cause pain, parts of the body to stop working the right way, or death.
- 7. a condition of being able to resist a particular disease especially through preventing development of a pathogenic microorganism or by counteracting the effects of its products