Chaviva Sirote-Katz checking the system. (IMAGE) Tel-Aviv University Caption Chaviva Sirote-Katz checking the system. Credit Tel Aviv University Usage Restrictions Credit must be given to the creator. License CC BY 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.