Androgen Receptor (image) Institute for Research in Biomedicine (IRB Barcelona) Share Print E-Mail Caption Top image shows interactions between the androgen receptor protein (AR) and the TFIIF protein in red. The bottom image shows that no interactions occur after the removal of the region of the AR to which TFIIF binds. Credit Paula Martínez-Cristóbal, IRB Barcelona Usage Restrictions None Share Print E-Mail 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.