Question

The predominant antibody in saliva is

• A. IgG
• B. IgA
• C. IgM
• D. IgD

Answer 1

Answer: (B)

IgA

Answer 2

$IgA$ is predominantly found in seromucous secretions such as saliva, tear, colostrums milk, tracheo-branchial and genito-urinary secretions. Daily production of secretory $IgA$ is greater than any of the other immunoglobulin.