The first evidence that baby's saliva enters the breast was from a 
poster presentation at ILCA last year. They did FISH (flourescent 
in-situ hybridization, a technique used for sensitive genetics 
diagnostics) to identify y chromosome bearing cells in maternal breast 
immediately after bf a male child. They found 'em!
I don't remember the author's names... sorry, but this is an exciting 
piece of work. I hope they publish it.

And don't forget the oral structural effects of breastfeeding, Brian 
Palmer DDS published an article in JHL several years ago on that.
Catherine Watson Genna, IBCLC  NYC
And congrats on the wedding going so well, Jan!

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