Frozen semen from lions are capable to produce embryos

Scientists 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 the surprise of the scientists the development of the lion embryos was retarded in comparison to similar embryos from domestic cats.

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