... interests. © 2019. Published by The Company of Biologists Ltd 2019 Summary: This Primer gives an overview of the history of human IVF, highlighting how basic research in developmental biology both influenced and benefitted from this process. Developmental biology IVF Embryo transfer...

...-mail: scng@embryonics.biz ) * Present address: Embryonics International, Gleneagles Hospital Annex#01-38, 6A Napier Road, Singapore 258500, Singapore 11 2 2004 © 2004. 2004 Somatic cell nuclear transfer Cell cycle Spindle formation Non-human primate Embryo transfer...

...) controls - the natural offspring of timed matings, (2) transferred controls - offspring from 2-cell embryos transferred to recipients 1 day asynchronous, and (3) transferred half embryos - offspring developing from one blastomere from the 2-cell stage transferred to recipients 1 day asynchronous...

... and maternal contribution has not previously been determined. Using embryo transfer and reconstituted blastocyst techniques, combined with isozymal and in situ genetic markers, we have established that about 70% of the 13 to 15-day placenta is trophectoderm-derived, 30% is maternal in origin, and 4% develops...