Fun: Single-molecule-fluorescence set-up-building for beginners…

The picture shows important characteristics of a state-of-the-art microscope: multicolour-excitation path with alternating laser excitation (blue, green, and red lasers),  a microscope stage with objective focusing the laser light into a small sample volume, the fluorescence from the sample volume is detected through the same objective, and the light is focussed onto a camera. For more information, click [here].