Across
- 4. a bacteria or virus your body knows how to get rid of
- 5. an inactive version of a disease
- 6. a cell that moves into your tissues and destroyes any bacteria
- 7. something that could get into your cut and make u ill
Down
- 1. something that gets rid of infections and bad cells
- 2. something that can get onto your skin and make you ill
- 3. something that can make you ill by spreading around your cells and causing you to be ill