Miniature Microscope (IMAGE) Howard Hughes Medical Institute Caption A miniature microscope (right) about the size of a quarter let researchers peek inside mice's heads and glimpse neural activity involved in social behavior. Credit Dulac Lab Usage Restrictions Must use with credit. 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.