Healthy live birth following embryo transfer of a blastocyst of tetrapronuclear (4PN) origin: a case report.

During IVF treatments, normal fertilization is generally evidenced by the appearance of two pronuclei, one arising from the oocyte and the other from the male gamete. Embryos derived from zygotes with a pronuclei number other than two are assumed to possess a ploidy abnormality and their transfer is usually avoided owing to increased risk of implantation failure, miscarriage, and molar pregnancies. Nonetheless, the inclusion of genotyping data in preimplantation genetic testing has revealed that a normal diploid configuration is possible in embryos deriving from zygotes with an abnormal pronuclei number such as tripronuclear and one pronucleus.

Failing Memory in Nonaffective Psychosis and Prolactin Response to 12.5 µg i.v. TRH.

The increase in plasma prolactin at 15 min following administration of 12.5 µg TRH i. v.

The effect of ascorbic acid during biopsy and cryopreservation on viability of bovine embryos produced in vivo.

Multiple ovulation embryo transfer (MOET) is used to make more rapid progress in animal breeding schemes. On dairy farms, where female calves are more desired, embryo sex diagnosis is often performed before embryo transfer. Fresh transfers have been favored after biopsy due to cumulative drop in pregnancy rates following cryopreservation.