Brain 3-D Image (VIDEO) Research Organization of Information and Systems This video is under embargo. Please login to access this video. Caption 3-D image of the neurons essential for fear conditioning in zebrafish. A transparent brain was prepared from the transgenic fish and analyzed by light-sheet microscopy. Cell bodies located in the dorsomedial telencephalon (Dm) and their projections to the hypothalamic area are visualized. Credit Koichi Kawakami Usage Restrictions Credit required. 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.