FIGURE 6.

(A) First DSC heating scans for different lysyl-DPPG storage times at pH 5.0. The black line represents lysyl-DPPG after 2 months of storage, the dark gray line after 3 mo, and the light gray line after 10 months of storage at −20°C. (B) Three heating scans of lysyl-DPPG at pH 5.0. The black line represents the first heating scan, the dark gray line the second heating scan, and the light gray line the third heating scan.