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FTIR spectroscopy of the selected lipid mixtures (20 mol% ω-O-acylCers in black and 20 mol% ω-OHCers in blue) shows the phase transitions indicated by the thermal evolution of the methylene symmetric stretching vibration (A) and disappearance of the methylene rocking doublet characteristic of the orthorhombic chain packing (B). FTIR, Fourier-transform infrared spectroscopy; ω-O-acylCers, omega-O-acylceramides; ω-OHCers, ω-hydroxylated Cers.
