A mouse xenograft long-term replication yields a SARS-CoV-2 Delta mutant with increased lethality
Description
We recently established a long-term SARS-CoV-2 infection model using lung-cancer xenograft mice and identified mutations that arose in the SARS-CoV-2 genome during long-term propagation. Here, we applied our model to the SARS-CoV-2 Delta variant