Calcein UltraBlue™ is a membrane-impermeant fluorescent dye. It is a rich blue-emitting variant of the green fluorophore calcein (Item No. 16221), which has been entrapped in liposomes and similar vesicles for studying membrane characteristics.1,2 Calcein UltraBlue™ displays excitation/emission maxima of 360/445 nm.WARNING This product is not for human or veterinary use.
