Purifying Janelia Fluor Dye (IMAGE) Howard Hughes Medical Institute Caption This image shows purifying a new Janelia Fluor 549 derivative using flash chromatography. Credit Luke D. Lavis Usage Restrictions Must use with credit 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.