Human Estrogen Receptor Alpha (IMAGE) Case Western Reserve University Caption Case Western Reserve University School of Medicine researchers have uncovered a previously uncharacterized, bridge-like structure within the human estrogen receptor that could serve as a valuable new drug target. Credit Case Western Reserve University School of Medicine 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.