Neurons in the Human Brain (image) Allen Institute Share Print E-Mail Caption This is a light microscopy image of a slice of human brain tissue. Neurons have been injected with a dye to reveal their morphology (shape). Credit Allen Institute Usage Restrictions Without modification Share Print E-Mail 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.