Schematic Of New E2 (Estrogen) Sensor (IMAGE) American Institute of Physics Caption A schematic shows the new sensor that can detect low levels of E2, one of the primary estrogen hormones, in liquids. Credit Natalie Plank, et al/Victoria University of Wellington 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.