Educational and historical IVF videos

From the morula to the blastocyst stage

From the morula to the blastocyst stage
Submitted By: Thorir Hardarson, Phd.
Website: Fertility Center Scandinavia
Date: 28th August 2010
Time: 1:59

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In recent years, partly due to the development of more advanced culture media, certain IVF-clinics have started to prolong the culture to the blastocyst stage in order to increase the possibilities to choose optimal embryos for replacement.

This sequence shows in time-lapse, two embryos at the eight-cell stage developing quite different, where one degenerates while the other expands and approaches the fully developed blastocyst stage. It is not possible to know whether the degenerating embryo could have developed normally if replaced earlier, but in this sequence only one embryo became a blastocyst. This blastocyst has morphological signs of normality with volume expansion and thinning of the zona pellucida.


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