Chang CW, Parsi KM, Somasundaran M, Vanderleeden E, Liu P, Cruz J, Cousineau A, Finberg RW, Kurt-Jones EA. A Newly Engineered A549 Cell Line Expressing ACE2 and TMPRSS2 Is Highly Permissive to SARS-CoV-2, Including the Delta and Omicron Variants. Viruses. 2022 06 23; 14(7).