A True Hermaphrodite Chimera Resulting from Embryo Amalgamation after in Vitro Fertilization

Abstract excerpt

High rates of successful pregnancy after in vitro fertilization depend on placing more than one embryo into the mother, a practice resulting in a 30-to-35-fold increase in dizygotic-twin deliveries.1 Increased frequencies of twin-associated anomalies might also therefore be expected. Chimerism, the presence in a single person of cells derived from two or more zygotes, is one such rare anomaly. It is usually...

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