Across
- 4. A condition where the immune system attacks its own body.
- 6. The system of proteins that helps antibodies clear pathogens.
- 7. Proteins produced by B cells to neutralize antigens.
- 8. A molecule that triggers an immune response.
Down
- 1. White blood cells responsible for immunity.
- 2. An immune organ located in the chest, where T cells mature.
- 3. Cells that present antigens to T cells.
- 5. The first line of defense against pathogens.