Fig. 2From: Bacterial outer membrane vesicles as cationic dye carriers for optoacoustics-guided phototherapy of cancerDevelopment and characterization of OMV-Dye complex. a Transmission electron microscopy image of OMV. b Dynamic light scattering profile of OMV and OMV-Dye complexes. c Zeta potential of OMV, free dyes (IR780, Cy7, Cy7.5), and OMV-Dye complexes. d, e, f The absorption spectrum of OMV, free dyes (IR780, Cy7, Cy7.5) and OMV-Dye complexes until 24Â hBack to article page