Figure 3 raw data: fluorescence emission spectra.

Figure 3. Fluorescence emission spectra (AU, arbitrary units) of green fluorescent protein (GFP). GFP in aqueous buffer (50 mM PBS) and lyophilized powder of GFP. These fluorescence emission spectra were recorded with excitation at 395 nm using excitation and emission slit widths of 2 nm and 5 nm, respectively.