MT-RNR2 and infection: The expression analysis using Western blotting demonstrated that both AOaV-1-wt (Figure 4B) and rAOaV-1-SARS-CoV-2 (Figure 4C) progressively replicated in Vero cells and expressed the HN protein as early as 6 h post-infection and as late as 2 days after initiation of the infection.