induced stem cells
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Scientists Say They’ve Now Grown a Whole Human Embryo Model From Scratch
A team of scientists in Israel say they’ve created a completely human-like embryo model without the need for a sperm or egg, up through 14 days of development.
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Chimeric Human-Monkey Embryos Kept Alive for a Record 19 Days
Building on previous experiments, an international team of scientists has created chimeric human-monkey embryos, which were kept alive for nearly three weeks. The breakthrough could lead to new ways of testing drugs and generating organs for transplant, but this line of research is raising some ethical concerns.