Assertion: led's intensity | /r/CapableOf | provide useful illumination source
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text: Furthermore, newer high-power LEDs generate sufficient intensity to provide a useful illumination source for a wide spectrum of applications in fluorescence microscopy (see Table 1), including the examination of fixed cells and tissues, as well as live-cell imaging coupled to Förster resonance energy transfer (FRET) and lifetime measurement (FLIM) techniques.