Fig. 3
From: Effect of chitooligosaccharide on the inhibition of SARS-CoV-2 main protease
The fluorescence spectra of Mpro in the presence of chitooligosaccharides (pH = 7.4, λex = 288 nm). In the figure, a to f represent chitooligosaccharides at concentrations of 0, 1.0, 2.0, 3.0, 4.0, and 5.0 × 10−4 mol/L, respectively