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Ancient Viral DNA Is Essential for Human Embryo Development, Study Shows

Summary by Phys.org
Our ancient past isn't always buried history. When it comes to our DNA, nearly 9% of the human genome is made up of leftover genetic material from ancient viruses (called endogenous retroviruses or ERVs) that infected our ancestors millions of years ago and became permanently integrated into our genetic code. In a new study published in the journal Nature, scientists have demonstrated that one piece of this viral junk is essential for the earlie…

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Phys.org broke the news in United Kingdom on Thursday, October 2, 2025.
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