$ATOS Announces Successful In vitro Testing Results of COVID-19 http://www.globenewswire.com/news-release/2020/05/20/2036465/0/en/Atossa-Therapeutics-Announces-Successful-In-vitro-Testing-Results-of-COVID-19-Drug-AT-H201-Inhibits-SARS-CoV-2-Infectivity-of-VERO-Cells-in-Laboratory-Culture.html