Levels of Kv4.2 Protein in Brain Cells (IMAGE) Emory Health Sciences Caption Kv4.2, which regulates electrical signals, is lower in cells from mice missing FMRP ("KO") compared to wild-type ("WT"). Credit Christina Gross 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.