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Experimental apparatus. ENZ, enzyme solution; BUF, O2-saturated buffer; MIX, active mixer; JCK, thermostated jacket; FC, flow cell; LB, laser beams; L1, L2, L3, lenses; F1, notch filter; F2, short-pass filter; F3, depolarizer; SL, entrance slit; POL, polychromator; CCD, CCD detector.
