holoacardius acephalus

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• holoacardius acephalus — an imperfectly formed free twin fetus lacking the cranial part of the body …   Medical dictionary

• acardius acephalus — holoacardius acephalus …   Medical dictionary

• holoacardius — A separate, grossly defective twin lacking a heart of its own, its blood supply being dependent on a shunt from the placental circulation of a more nearly normal twin; a placental parasitic twin or …   Medical dictionary