NAIROBI, Kenya: A rhinoceros is pregnant through embryo transfer in the first successful use of a method that conservationists said might later make it possible to save the nearly extinct northern white rhino subspecies.

In testing with another subspecies, the researchers created a southern white rhino embryo in a lab from an egg and sperm that had been previously collected from other rhinos and transferred it into a southern white rhino surrogate mother at the Ol-Pejeta Conservancy in Kenya on Sept. 24, 2023.

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