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First-of-its-kind method cryopreserves fruit fly embryos in liquid nitrogen


First-of-its-kind method cryopreserves fruit fly embryos in liquid nitrogen
Cryopreservation, or the long-term storage of biomaterials at ultralow temperatures, has been used across cell types and species. However, until now, the practical cryopreservation of the fruit fly (Drosophila melanogaster)-;which is crucial to genetics research and critical to scientific breakthroughs benefiting human health-;has not been available.
To keep alive the ever-increasing number of fruit flies with unique genotypes that aid in these breakthroughs, some 160,000 different flies, laboratories and stock centers engage in the costly and frequent transfer of adults to fresh food, risking contamination and genetic drift, said Li Zhan, a mechanical engineering postdoctoral associate with the University of Minnesota College of Science and Engineering and the Center for Advanced Technologies for the Preservation of Biological Systems (ATP-Bio). ....

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