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(A) Fluorescence spectra of tryptophan in HGP (circles), sHGP (triangles), and scrHGP (squares) were measured by excitation at 280 nm and reading emission between 300 and 400 nm in 1 nm increments. Fluorescence spectra were taken with (filled) and without (empty) liposome solution. (B) Each fluorescence spectra was normalized by its highest intensity value in order to delineate emission spectra shifts.
