BioVision's FluorLast? with anti-fading agent 1, 4-Diazobicyclo-(2,2,2-octane (DABCO?) is an aqueous mounting medium for preserving fluorescence of tissue and cell smears. This unique formula prevents rapid photobleaching of FITC, Texas Red, AMCA, Alexa fluoro 488, Alexa fluoro 594, Cy dyes, tetramethyly rhodamine, and Redox. The fluorescence is retained during prolonged storage at 4oC in the dark.