Glycine Receptor Alpha 4 Subunit (Glra4) Is Expressed from the MII Oocyte to the Four-Cell Stage (image) Max Planck Florida Institute for Neuroscience Share Print E-Mail Caption Immunohistochemical staining of Glra4 protein from MII stage oocyte to four-cell stage embryo. Glra4 expression peaked at the two-cell stage, and is maintained high until the four4-cell stage. Credit Max Planck Florida Institute for Neuroscience, University of Toyama, Yamagata University, Cairo University, RIKEN Center for Integrative Medical Sciences and Setsunan University 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.