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Firstly the younger sibling will forever be in the shadow of their
older sister, only there because of her sisters illness. The older sibling
will also be jealous of the younger siblings good health and the feeling
of being indebted to them.
Secondly, if the cells from the umbilical cord taken are unsuccessful,
will a second donation be required, and a third? It is the right of the
second sibling to be consulted instead of just used.
It seems to me that both siblings will be living a half life as neither
would exist without the other. Where can you separate them. Will it be
psychologically damaging for both siblings to live without an identity of