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szdaily -> World -> 
‘Rare’ genetic sequence doesn’t mean COVID engineered
    2021-06-25  08:53    Shenzhen Daily

TWO scientists from the University of Leeds have refuted a report by the Wall Street Journal (WSJ) claiming the COVID-19 lab leak theory, saying there is no evidence presented in the WSJ piece that scientifically supports the concept of a lab leak of a genetically engineered virus.

The article, written by Keith Grehan, research fellow of molecular biology, and Natalie Kingston, research fellow of virology, was published Wednesday on the Conversation, an online media outlet that publishes news stories and articles written by academics and researchers.

“The authors of the WSJ article argue that Sars-CoV-2 originated in a lab based on the presence of a ‘CGG-CGG’ sequence. They claim this is a ‘readily available and convenient’ codon pair that scientists prefer to use to produce the amino acid arginine. But to anyone with an understanding of the techniques required for genetic modification, this double-CGG is usually no more difficult or easy to produce than any other pair of codons that encode arginines,” the article said. (Xinhua)

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