EZH2 and infection: Prior to infection with the experimental SARS-CoV-2 ASOs, we first examined the ability of various cell lines to freely uptake ASOs using an ASO against the abundant, endogenous EZH2 (Enhancer of Zeste 2 Polycomb Repressive Complex 2 Subunit) transcript compared with a non-targeting control, both at 1 and 5 μM.