Fig. 5From: Enhancement of oral bioavailability of doxorubicin through surface modified biodegradable polymeric nanoparticlesMass spectrum of, a daunorubicin (IS) precursor ion (protonated precursor [M−H]+ ions at m/z 528.46 and b IS product ion (major fragmented product ions at m/z 321.41) showing fragmentation transitionsBack to article page