Want to know more about the science behind advanced fertility treatments?

Download recent research articles from our award-winning lab director, Klaus Wiemer, PhD, for a behind-the-scenes view into the delicate process of creating new life.

Wiemer, Director of Embryology and Reproductive Sciences at NCRS, continues to share his research with a new chapter on how freezing can effect oocytes and embryos. Weimer details both types of cryopreservation damage and causes of damage.




For more information on freezing embryos, download a summary of pregnancy rates following vitrification of blastocysts. The results from this technique indicate that survival rate using frozen embryos are now approaching to or equal to that approached with fresh blastocysts.




Klaus Wiemer, PhD, Director of Embryology and Reproductive Sciences, is currently conducting research in collaboration with other center methods to improve survival rate of unfertilized oocytes. Wiemer's research is comparing two ultra rapid freezing methods to improve developmental following vitrification. Survival rates using current technology is greatly dependent on initial egg quality. We hope to develop a freezing system that is more forgiving to eggs of all quality. This will be especially help for older women of patients that have compromised health issues.



NCRS's Director of Embryology Klaus Wiemer, PhD, partners with researchers to perfect a safer, simpler method for frozen embryo storage that aims to increase blastocyst survival rates and clinical pregnancies.





Embryos once considered poor candidates for transfer or cryopreservation can, according to research, result in normal live birth rates.




Many advancements in reproductive medicine have come from instruments permitting a level of precision that cannot be achieved by the human hand. A chapter of a forthcoming book, co-authored by Klaus Wiemer, PhD, of NCRS, details some of the accomplishments possible with this technology.