Figure 3. Comparing mass spectra from pure lowicryl and lowicryl embedded with ferritin.

Mass spectra of (a) pure lowicryl (top; blue) and ferritin embedded in lowicryl (bottom; red) collected at 450 pJ UV laser energy. (b) zoomed in regions of peaks labeled in (a) for pure lowicryl (top; blue) and ferritin embedded in lowicryl (bottom; red). Potential peak identities of labeled peaks are listed in Supplementary Table 1.