The study uses new gold nanotechnology and lasers to
The research is published today in ACS Nano, a leading scientific journal published by the American Chemical Society.
"There's no doubt that the use of this technology, in this way, marks a paradigm shift for cryopreservation and the conservation of many wildlife species," said Mary Hagedorn, an SCBI research scientist and paper co-author who has been working on cryopreserving zebrafish embryos since 1992.
"To get anything to work at such cold temperatures, you usually have to get creative. Here we take a unique approach by combining biology with an exciting engineering technology to do what has been impossible previously: to successfully freeze and thaw a fish embryo so that the embryo begins to develop, rather than falls apart," Hagedorn added.
By freezing sperm, eggs and embryos, conservationists can safeguard at-risk species and their genetic diversity, making it possible to bolster the genetic pool and therefore health of wild populations years—or even centuries—later. Although scientists have successfully cryopreserved the embryos of many mammal species and the sperm of many species of fish, freezing fish embryos proved infinitely more complicated.
Read more at: https://phys.org/news/2017-07-cryopreserve-fish-embryos-life.html#jCp
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