Dr. Tempera in his lab (IMAGE) The Wistar Institute Caption Dr. Italo Tempera (far right) oversees an experiment taking place in the lab. Credit The Wistar Institute Usage Restrictions None License Original 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.