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holoacardius

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holoacardius
[hol′ō·ākär′dē·əs]
Etymology: Gk, holos + kardia, heart
a separate, grossly defective monozygotic twin fetus. It is usually a shapeless, nonformed mass in which the heart is absent and the circulation in utero is accomplished totally by the heart of the viable twin through a vascular shunt.

holoacardius [hol″o-ah-kahr´de-us]
a malformed monozygotic twin fetus in which the heart is entirely absent.

holoacardius
an unequal twin fetus in which the heart is entirely absent.


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