ABCG2 (IMAGE) ETH Zurich Caption The transport protein ABCG2 (center) is embedded in the cell membrane. It recognizes over 200 substances in the cell interior (below) and transports them outside (above). Credit ETH Zurich / Scott Jackson, Ioannis Manolaridis, Kaspar Locher 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.