The $20 Million Bioengineering Gambit to Save the Northern White Rhino.

WHITE rhinoceros; BIOENGINEERING; BIOLOGICAL extinction; ENDANGERED species; CALVES; NEW York City history

While the team in San Diego is trying to generate northern white rhino embryos from cells, BioRescue is attempting to fertilize eggs collected from Fatu and Najin with cryopreserved northern white rhino sperm. Generating northern white rhino sperm and northern white rhino egg, though, is a long-term process, one that involves figuring out the hormones and growth signals needed to get the germ cells to differentiate further. His group is harvesting eggs from female rhinos in Kenya; eventually the team hopes to create embryos using the frozen sperm of long-deceased northern white rhino males. [Extracted from the article]

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