The Medusavirus (IMAGE) Kyoto University Caption This virus was found infecting amoebas in the hot springs of northern Japan. The amoeba forms cysts, and produces a hard protective covering, giving it the name: Medusavirus Credit (Kyoto University/Robin Hoshino Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.