X-ray diffraction profiles after normalization with respect to the incident X-ray flux. Then, all spectra were subtracted from the background, that is, XRD profiles from areas without myelin content as background profiles. The thick colored lines along the experimental data (circles) result from the fitting procedure using the Gaussian line shape. The black and grey Gaussian peaks correspond to the Bragg peaks of the multilamellar and hexagonal phases, respectively. arb. units, arbitrary units.