Figure 2.
(A) Calcein incorporation in mesoporous silica cores after fusion with DOPC/DOTAP or DOPC/DOPS liposomes. Inset: optical image of centrifuged mesoporous silica cores (indicated by the arrows) after incubation with 250 μM calcein solutions with and without DOTAP liposomes. (B) Confocal fluorescence images of calcein loaded protocells formed by fusion of Texas Red-labeled DOTAP liposomes. Green channel, calcein; red channel, Texas Red; merged = red + green.