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How Old DNA Fragments of Viruses Participate in the Formation of the First Embryonic Cells
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[Article already published on January 13, 2026] The mammalian genome bears the trace of ancient viral infections: almost 10% of our DNA comes from embedded retroviruses millions of years ago. Long considered inactive or parasitic, these fragments have recently revealed an unexpected function in the very first hours of life. A study led by the Medical Research Council Laboratory of Medical Sciences (UK), in collaboration with Helmholtz Munich and…
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