Kathy D mentioned : Dr. Jack Newman's Scientific American article of a few
years back has an
excellent explanation and great graphics showing how this works.  The
antibodies are made in the mother's gut. This article is on my website at :
http://users.erols.com/cindyrn/protect.htm

Cindy ;-)

Cindy Curtis,RN,IBCLC
mailto:[log in to unmask]
http://www.erols.com/cindyrn

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