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Intensity of chlorophyll fluorescence excited by UV or blue-green light. Unprocessed chlorophyll fluorescence at the F0 level excited by UV-B (FUV-B), UV-A (FUV-A), and blue-green radiation (FBG) is depicted in A, B, and C, respectively. See Figure 4 for comments on symbols and error bars. In B, vis data differed significantly from those of the other treatments (see “Materials and Methods”).
