Convalescent serum, derived from recovered individuals, includes antibodies. It's employed in passive immunotherapy to aid others in combating the same illness.
| List - I | List – II | ||
| A. | Malignant tumors | i. | Destroy tumors |
| B. | MALT | ii. | . AIDS |
| C. | NACO | iii. | Metastasis |
| D. | \( \alpha-Interferons\) | iv. | Lymphoid tissue |