Human Brain Sample (2 of 2) (IMAGE) Allen Institute Caption Allen Institute Scientist Rebecca Hodge examines a slice of human brain. This is one of several brain samples used in a comparison study of human and mouse brain cell types. Credit Allen Institute 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.