The LV200 has been carefully designed for long-duration cell bioluminescence. A completely new optical design dramatically increases sensitivity and enables the detailed study of photosensitive cells and luminescence probes at high magnification. The built-in system for temperature control, humidity and gas flow helps to keep the cultured cells or tissue slices in a healthy condition throughout the observation period and the unique light-tight enclosure shields the sample and optics from any external light.