| Answer | Crossword Clue |
|---|---|
| TCELL | Part of the immune system |
| TCELL | Part of the body's immune system |
| TCELLS | Part of the body's immune system |
| TCELL | Key part of the immune system |
| TCELL | Blood component that's part of the immune system |
| TCELL | Immune system part |
| NODE | Lymph ... (immune system part) |
| SHREDBLOODCELLS | Attack the immune system? |
| ANTIGEN | It stimulates the immune system |
| NONSELF | Matter foreign to the immune system |
| HISTAMINES | They're released by the immune system |
