Mice (IMAGE) University of Münster Caption Genetically identical mice are used in animal research in order to achieve standardised testing conditions. Credit University of Münster - Department of Behavioural Biology Usage Restrictions The use of the image is permitted exclusively in connection with this press release and with reference to the source. License Original 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.