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Low-frequency part of the resonance Raman spectra of ferrous deoxy form of F. hepatica hemoglobin F2 at pH 5.5 (a) and 6.8 (b), compared with the ferrous deoxy form of wild-type P. epiclitum hemoglobin (pH 6.2) (c) (100–900 cm−1 region). The laser-excitation wavelength was 413.1 nm at 17 mW power.
