The CoolLED pE-340fura system with the 340 and 380 nm wavelengths and white light: Number one I was really surprised how bright the white light was, which is really useful for all other types of imaging. Number two, the 340 and 380 nm wavelengths are really well implemented with the excitation filters that match the filter cube in the microscope that you can just slide into the CoolLED system and then adjust the intensity of the 380 nm to balance that out for Fura-2 experiments. It’s really super easy.