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  • Antibodies present in colostrum which protect the newborn from certain diseases are of a. IgG type b. Ig A type c. Ig D type d. Ig E type

Antibodies present in colostrum which protect the newborn from certain diseases are of

a. IgG type

b. Ig A type

c. Ig D type

d. Ig E type

Answers (1)

The answer is the option (b) IgA type

IgA: Immunoglobulin A (IgA) is an antibody primarily found in colostrum, the first milk produced by mammals after giving birth. It is essential for providing newborns with passive immunity, protecting them from infections. IgA is mainly located in mucous membranes like those in the respiratory tract, gastrointestinal tract, and urogenital tract. Additionally, it is present in bodily secretions such as saliva, tears, and mucus, where it helps defend the body against pathogens.

IgD: Immunoglobulin D (IgD) is an antibody located on the surface of B lymphocytes (B cells). It functions as a receptor for antigens and plays an important role in the activation and regulation of B cell responses, supporting the immune system's ability to recognize and respond to threats.

IgG: Immunoglobulin G (IgG) is the most common antibody found in human blood (serum). It is vital for the body's adaptive immune response and offers long-lasting immunity following an infection or vaccination. IgG has the unique ability to cross the placenta, providing the fetus with passive immunity during pregnancy and protecting it from diseases.

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