Fig. 4From: Characterization of ovarian cancer cells and tissues by Fourier transform infrared spectroscopyPercentage of secondary structures of protein Amide I in normal and ovarian cancer cells. (a) β-sheet, (b) α-helix, (c) β-turn structures. Error bars represent the SEM, n = 3 (*: P < 0.05. **: P < 0.01. ***: P < 0.001)Back to article page