Rat brains (IMAGE) University of Tokyo Caption Microscopic images from the amygdala, the brain site for regulating fear responses. 2-MB reduces the fear by impacting on the brain as evidenced by the decreased production of c-Fos protein, a marker of neural activity. Credit ©2023 Kiyokawa et al. CC-BY-ND Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the work are permitted. License CC BY-ND 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.