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25. For epifluorescence illumination press the EPI tab and select a fluorescence filter cube from the Mirror tab. Briefly, 2 (U-FUW is for blue fluorescence), 3 (U-FBNA is for green fluorescence) and 4 (U-FGWA is for red fluorescence), but see the fluorescence filter cube specifications for a full description of the available filters. . Make sure that the fluorescence shutter (bottom left corner on touch panel controller) is open.
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