Frozen semen from lions can produce embryos

Scientists from Berlin successfully produced embryos from African lions via assisted reproduction. What is genuinely new is the fact that they used immature eggs that were retrieved from African lionesses. After artificial maturation these eggs were injected with lions' sperm, previously stored in a cryobank. To surprise of the scientists from the Leibniz Institute for Zoo and Wildlife Research (IZW) the development of the lion embryos was retarded in comparison to similar embryos from domestic cats.

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