Received: 9 March 2021
Accepted: 12 November 2021
First Online: 24 November 2021
: X.X., V.D.M. and P.-Y.S. have filed a US provisional patent 63/000,713 'Reverse genetic system of SARS-CoV-2', filed on 27 March 2020, on the reverse genetic system and reporter SARS-CoV-2. The other authors declare no competing interests.
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