Match the immunological terms in
Column I with their function/description in
Column II.
| Column I | Column II |
|---|
| P. J gene | 1. Suppresses immune system by blocking calcineurin |
| Q. Cyclosporin | 2. Antibody binding site on a large molecule |
| R. Epitope | 3. Small foreign molecule which elicits immune response only when combined with a carrier molecule |
| S. Hapten | 4. Contributes to antibody diversity |