Antiviral activity of oleandrin and a defined extract of Nerium oleander against SARS-CoV-2 oleh Kenneth S. Plante, Varun Dwivedi, Jessica A. Plante, Diana Fernandez, Divya Mirchandani, Nathen Bopp, Patricia V. Aguilar, Jun-Gyu Park, Paula Pino Tamayo, Jennifer Delgado, Vinay Shivanna, Jordi B. Torrelles, Luis Martinez-Sobrido, Rick Matos, Scott C. Weaver, K. Jagannadha Sastry, Robert A. Newman