... judges have overturned this verdict and the couple are due to recommence treatment to attain their goal. The object of their search is to implant only embryos that match their son's tissue type. Should a live birth result from this treatment then blood would be taken from the baby's umbilical cord in the hope that it contained enough stem cells to help the brother. If this were not the case then the couple would have to apply to use the baby as a donor for a bone marrow transplant. A bone marrow transplant was the first option open to the family but, after four years of the boy's life, no suitable donor has been found. A persons best chance of a match is always a sibling as parents only share half the DNA of their children each. However, there are still no guarantees of a true match, which is where the ...

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