Live Mice Are Bred from Artificially Developed Egg

For the first time, live baby mice have been successfully produced by injecting sperm into a modified, inactive mouse embryo rather than from a fertilized egg cell, according to scientists. Mammalian eggs that are not fertilized can be "tricked" into starting the development process toward becoming an embryo, previous research has shown. In the new research, the scientists took these inactive embryos and injected sperm directly into them, which resulted in the birth of healthy baby mice with a s