Embryo-like structures after four days of development in the lab (IMAGE)
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The team observed the emergence of the three-dimensional hematoids under a microscope in the lab. After just a few days these had self-organised into three germ layers - called the ectoderm, mesoderm, and endoderm - the foundations of the human body plan that are crucial for shaping every organ and tissue, including blood.
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Jitesh Neupane, University of Cambridge
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