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chimerism
(redirected from Chimera (genetics))

    Also found in: Wikipedia, Hutchinson 0.06 sec.
chimerism
the state of being a chimera; the presence in an animal of cells of different origin, e.g. XX/XY chimerism.
blood chimerism
twins that have a common circulation develop immune tolerance. Each of them is then a chimera. When the twins are of opposite sex, the female twin may be a freemartin. Sterilization of the female is brought about by the transfer of H-Y antigen to the female gonad.


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