PCR. Photo essay from laboratory. Hospital of Meaux 77, France. Laboratory of molecular biology. Research of mutations by real_time PCR capillary LightCycler from Roche _ Results on screen after amplification 3. LightCycler is a device for real_time quantitative PCR and detection of mutations. It is a thermal cycler combined with a spectrofluorimeter, monitored by a computer. The reactions are undertaken in capillary tubes. Here, visualization of the results on the screen of the computer. We det