| Column I | Column II | |
| 1. | Benign tumor | Non-cancerous tumor |
| 2. | Carcinoma | Cancer of epithelial tissues |
| 3. | Lymphoma | Haematopoietic cells tumor |
| 4. | Sarcoma | Cancer of glands (secretory tissues). |
| 1. | DNA only |
| 2. | RNA only |
| 3. | DNA or RNA only |
| 4. | either DNA or RNA only |