Dirk Keene Lab (IMAGE) Allen Institute Caption C. Dirk Keene (University of Washington Medicine) shows human brain tissue, donated to science, that has been sectioned for experimentation. Credit Erik Dinnel, Allen Institute Usage Restrictions None 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.