People may ask what makes embryonic stem cells so different from adult stem cells. They are qualitatively different in that adult stem cells maintain and repair human cells, embryonic cells help grow the embryo into a foetus and baby. Embryonic stem cells are inherently unstable and when transplanted into the bodies of recipients, they have a tendency to produce tumours; moreover, they are rejected by the recipient's immune system because they do not come from his own body and are unlikely to be genetically compatible; with adult stem cells therapy, the stem cells can come from the patient himself, causing no immune problems.
See http://www.stemcellresearchfacts.com/pros_cons.html,
http://www.lifeissues.org/cloningstemcell/bradsarticle.html, http://www.i-sis.org.uk/stemcells2.php, http://www.lifesitenews.com/ldn/2003/nov/03112001.html (note date).
Monday 24 November 2008
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment