The man-made embryo even released hormones that tested positive on a pregnancy scan. They say it will help miscarriage research.
A human-like embryo has been grown without a sperm or egg in a breakthrough that could help prevent miscarriages.
A stem cell–derived human embryo model at a developmental stage equivalent to that of a day 14 embryo. The model has all the compartments that define this stage: the yolk sac and the part that will become the embryo itself, topped by the amnion – all enveloped by cells that will become the placenta .The man-made embryo even released hormones that tested positive on a pregnancy scan.
Last year the team created the first artificial embryo without conception, using stem cells from mice. It is currently illegal to allow human embryos to develop in a lab for research purposes beyond 14 days.Commenting on the announcement, Dr James Briscoe, assistant research director at the Francis Crick Institute in London, said: “The important thing about this research is that it is a step towards opening a window on the period of human development where many pregnancies fail and which has been really difficult to study up until now.
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