Fluorescent image of LysoSensor™ Yellow/Blue dextran-loaded PLGA microspheres. λem = 521,452 nm during the in vitro release period. Dextran nanoparticles loaded in PLGA microsphere (A), the controlled LysoSensor™ Yellow/Blue dextran solution loaded in PLGA microsphere by traditional W/O/W method (B).
Wu et al. Nanoscale Research Letters 2013 8:197 doi:10.1186/1556-276X-8-197