Human Health and Diseases Question 60
60. Which one of the following immunoglobulins does constitute the largest percentage in human milk?
[2015 RS]
(a) $Ig M$
(b) $Ig A$
(c) Ig G
(d) $Ig D$
Show Answer
Answer : b
Hints & Solutions
(b) Colostrum contains high levels of $\lg A$, which gives passive immunity to foetus. IgA antibodies protect body surfaces that are exposed to outside foreign substances. This type of antibody is also found in saliva, tears, and blood. About $10 %$ to $15 %$ of the antibodies present in the body are IgA antibodies.
