Leica Microsystems has launched two instruments of the laser microdissection microscope series, the Leica LMD6 and the LMD7, with LED illumination for transmitted light. Users can now choose between halogen and LED illumination. LEDs are an energy-efficient light source providing homogenous illumination and a constant color temperature. They also save energy, and their lifetime of up to 25,000 hours is longer than that of halogen lamps. The Leica LMD6 succeeds the Leica LMD6500, the Leica LMD7 succeeds the Leica LMD7000. The upright microscope Leica DM6 B, successor to the Leica DM6000 B, is integrated in both new LMD systems.