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Scientists grow whole model of human embryo, without sperm or egg

https://www.bbc.co.uk/news/health-66715669

The models could improve understanding of the earliest moments of life and help fertility research.

Scientists grow whole model of human embryo, without sperm or egg

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The article says the embryo models have a 99% failure rate, and also that it would be impossible to achieve pregnancy with it. Sounds like the process to coax the cells to form an embryo and miscellaneous parts takes too long.