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flag Chinese scientists mapped early human development (days 14–28) using AI and primate models, advancing fertility and birth defect research.

flag Chinese scientists have mapped early human embryonic development between days 14 and 28, a previously inaccessible phase, using primate models, spatial transcriptomics, and AI to create a 3D digital model. flag The team, awarded the 2025 Outstanding Science and Technology Achievement Prize, overcame ethical and technical barriers to study organ formation and placental development. flag They developed stem cell-based models to simulate recurrent implantation failure—afflicting about 15% of fertility patients—and identified potential drugs to improve embryo attachment, advancing research in birth defects and personalized reproductive medicine.

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