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(a) Standard deviations (shaded area) overlying the averages are shown from 2750 to 3100 cm−1 for MR1 plateau (solid line) (n = 7) and exponential (dotted line) (n = 7) cells. The spectra have been normalized to the integrated intensity from 2929 to 2940 cm−1. (b) Difference spectrum for MR1 plateau minus MR1 exponential cells, with its standard deviation, is shown.
