Importin (IMAGE) Weizmann Institute of Science Caption In genetically engineered mice lacking the protein called importin alpha-5 (right), a molecule called MeCP2 (red), known to affect anxiety behaviors, stayed on the outside the nuclei (blue) of brain neurons, instead of getting inside the nuclei, as it does in regular mice (left). Images obtained with a confocal microscope and displayed using computational reconstruction. Credit Weizmann Institute of Science 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.