Researchers generate human embryo-like structures that include extraembryonic tissue
Gastrulation, the process where an embryo reorganizes itself from a hollow sphere into a multilayered structure, is considered a ‘black box’ of human development. This is because human embryos are typically not cultured for longer than 14 days because of bioethical concerns, and gastrulation occurs between 17- and 21-days post-fertilization…
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