Question
Biology Question on Parturition And Lactation
The yellowish fluid secreted by the mother during the initial days of lactation has abundant:
A
IgA
B
IgM
C
IgE
D
IgG
Answer
IgA
Explanation
Solution
The yellowish fluid is colostrum, which is rich in IgA antibodies. IgA provides essential immune protection to the newborn by protecting the mucous membranes from pathogens. This passive immunity is critical for early life defense.