A) Natural killer cells
D) Immunoglobulin A
Correct Answer: D
Solution :Colostrum, the yellowish fluid secreted by the mother during initial days of lactation is very essential to impart immunity to the -new born infant because it contains Immunoglobulin A. It will impart naturally acquired passive immunity to the newborn.
You need to login to perform this action.
You will be redirected in 3 sec