Across
- 3. Cell surface proteins that present antigens
- 5. Primary lymphoid organ where T cells mature
- 6. Immunoglobulin found in secretions like saliva
- 7. Protein molecules that recognize antigens
Down
- 1. Cells that produce antibodies
- 2. Organelle important for antigen processing in APCs
- 4. Inflammatory chemical released by mast cells
- 6. Type of immunity you are born with
- 8. Immunoglobulin involved in allergic reactions