Match the immunoglobulin class in Group I with its properties in Group II.
| Group I | Group II |
| P. IgG | 1. Major antibody in external secretions such as bronchial mucus |
| Q. IgA | 2. Protects against parasites |
| R. IgE | 3. Antibody that appears first in serum after exposure to an antigen |
| S. IgM | 4. Antibody present in highest concentration in serum |
A. P-4, Q-1, R-2, S-3
B. P-3, Q-2, R-1, S-4
C. P-4, Q-3, R-1, S-2
D. P-1, Q-4, R-3, S-2
Answer: Option A
This Question Belongs to Biotechnology Engineering >> Immunology In Biotechnology
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