pregancy / immune modulation

jfharr01 at jfharr01 at
Sun May 2 18:26:49 EST 1993

	Does anyone care to answer this question:  if an embryo is implanted
into the uterus of a female, why are the alloantigens not recognized by the
recipient's immune system?  Does the embryo produce proteins that somehow
modulate the immune system of the woman until implantation can occur?  When 
the embryo continues to develop, and there is an exchange of proteins and 
cells between mother and embryo, why then doesn't the mother's immune system 
attack?  If her immune system is somehow modulated, does this not then 
diminish the effectiveness of her immune system, thus compromising it a bit?  
Thank you for any response.   
   _/_/_/_/_/_/_/_/_/    _/  John F. Harris -- Computer Consultant
       _/  _/     _/    _/   . Internet: jfharr01 at
      _/  _/_/_/ _/_/_/_/   .. .. Bitnet: jfharr01 at ulkyvx.bitnet 
     _/  _/     _/    _/   . ..... Cogito ergo sum   Rene Descartes
_/_/_/  _/     _/    _/   . ........ Esse est percipi  George Berkley    
..................................... Ignoceeeees me!   Steve Martin

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