Convalescent serum is obtained from individuals who have recovered from an infection. It contains antibodies and is used in passive immunotherapy to help others fight the same disease.
| List I (Enzyme) | List II (Function) |
|---|---|
| (A) Cytochrome oxidase | (I) Electron transport system |
| (B) Topoisomerases | (II) Change linking number |
| (C) Cohesins | (III) DNA Replication |
| (D) PCNA | (IV) Cell cycle |
| LIST-I (Immunoglobulin Class) | LIST-II (Characteristics) | ||
|---|---|---|---|
| A. IgG | I. Serves as part of B-cell receptor complex | ||
| B. IgA | II. Anaphylactic mediating antibody | ||
| C. IgD | III. Most abundant in body fluid, neutralize toxins, opsonizes bacteria | ||
| D. IgE | IV. Secretory antibody and protect mucous membrane | ||