Across
- 6. The ___ T cell is like a ninja. It destroys cancer cells and virus-infected cells.
- 7. The ___ T cell stops the fighting once the germs are destroyed.
- 8. These are alive. They are tiny prokaryotic cells. These cells have cell walls. Some species are dangerous, but most are very good. Antibiotics can be used to treat an infection.
- 10. The ___ T cell is a retired soldier that remembers the enemies of the past. These cells will sound the alarm if the germs return.
- 11. Skin, hair, tears, mucus all prevent germs from entering the body. They are ___.
- 12. All T cells go to school in this organ near the heart. T cells mature at this school.
Down
- 1. The ___ T cell is like a general. It controls all other white blood cells.
- 2. These cells, found in the lymph nodes, produce antibodies. The cells are like mousetrap factories.
- 3. This is a big eater. It is like pacman. It is like a guard, custodian and police officer.
- 4. This is like a fingerprint. It is a code or symbol that identifies the invader.
- 5. A ____ is a very tiny germ that is neither dead nor alive. It uses your cells to reproduce and we get sick.
- 9. This is like a trap that is made by B cells. These traps attach and slow invaders down so macrophages can gobble them up.