113 Days
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أخبار الصين
Chinese researchers identify earliest human blood cells
Chinese scientists have revealed that the origin of human blood cells begins immediately before embryonic formation. The study showed that the hematopoietic factory in the umbilical vesicle was active prior to cellular specialization, producing primitive red blood cells, megakaryocytes, and marrow-derived progenitor cells. Additionally, the study demonstrated that blood cells do not originate from the ectoderm as previously believed, but from the mesoderm derived from the hypoblast, altering the understanding of early blood formation and offering new insights into the stages of hematopoiesis in the developing embryo.
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