NEW EGG-FREEZING TECHNIQUE OFFERS HOPE TO INFERTILE CANCER VICTIMS

Chemotherapy and radiotherapy may save a female cancer patientís life but these therapies may also cause infertility. While freezing a womanís eggs before cancer therapy begins offers one possible option, the thawing process often renders the eggs incapable of being fertilized. Now, a team of researchers from the University of Michigan Comprehensive Cancer Center has studied a freezing technique called vitrification which freezes an egg instantaneously thereby preventing the formation of damaging ice crystals which destroy about 50% of frozen eggs. In trials using mouse eggs, vitrification has achieved a 98% egg survival rate.

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