PLSCR1 and infection: Likewise, engineered loss of Plscr1 rendered mouse LET1 cells more permissive to infection by intact mouse coronavirus (MHV) (Fig. 3d), which belongs to the same β-coronavirus genus as the SARS-CoV-2, SARS-CoV, MERS-CoV and BatCoV-WIV-1 strains.