TBR Bio Endo and Immuno Psg II #14

[erythrocyte666]

Answer is A.
I get why II is wrong.
But why would antibodies from another mother help the infant? Wouldn't these antibodies be seen as foreign in the infant?
Also, is vaccination actually ineffective for newborns in comparison to children?

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[ohkos1]

From what I remember from immunology, breast milk contain IgE that give immunity to certain diseases. The immune system of a baby is not completely developed and needs help from breast milk.

 

[Czarcasm]

I agree, although bodily secretions including lactate consists of IgA though, not IgE.

 

[ohkos1]

I agree, although bodily secretions including lactate consists of IgA though, not IgE.

Ah, thanks for the correction. I couldn't quite remember the specific type of antibody.

 

[erythrocyte666]

But wouldn't the infant need breast milk from his/her mother only? Wouldn't the antibodies from someone else be recognized by the infant's body as foreign? (The infant still has his/her own IgM antibodies that can attack "foreign" matter, no?)