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. Author manuscript; available in PMC: 2014 Dec 10.
Published in final edited form as: J Control Release. 2013 May 9;172(2):10.1016/j.jconrel.2013.04.023. doi: 10.1016/j.jconrel.2013.04.023

Figure 4.

Figure 4

Characterization of drug-loaded CPMV. A) UV/visible spectroscopy of CPMV-PF showing the CPMV and proflavine-specific absorbance maxima at 260 nm and 450 nm. B) Native gel electrophoresis of CPMV and eCPMV with and without proflavine (PF) (it should be noted that non-purified samples were analyzed on the gel to show the migration pattern of free PF versus (e)CPMV); gels were documented under UV light, and then stained with Coomassie blue and photographed under white light. The bright bands in proflavine-positive samples indicate free dye that migrates towards the cathode in the electrophoretic field (on top).