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Line-narrowed emission spectra of PSII RC at 5 K. Measuring conditions are the same as in Fig. 2. The spectrum is the average of five spectra, excited at 684.0–686.1 nm. Also shown is the vibronic region (×5 magnification, upper spectrum). (Insets) Magnification of the PW and the 1,500–1,720 cm−1 region.
