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Room temperature absorbance spectra of highly concentrated PS I trimer samples from T. elongatus in the far-red wavelength range between 720 and 900 nm. The squares represent the ε-values (see right scale) for the different excitation wavelengths used in this work. The inset shows the absorbance spectrum in the QY region with [PS I]·d = 2.0 × 10–7 M cm.
