Our widefield fluorescence microscopes use white light from a mercury source and filters to excite fluorescent dyes in your samples. The signal is detected using a CCD camera and the image is displayed on the computer screen. For relatively thin samples labeled with fluorescent dyes (such as fixed cells on a slide, a monolayer of live cells, embryos, etc.) we have available the AxioObserver, Leica Stereomicroscope, and of popular use at the moment, our Olympus Upright microscope. The Olympus Upright allows you to image multiple fields of view and then stitched the fields together to obtain an overview image of a large area.