Localization of linked conjugates 6 in U87 cells at 1 µM. Images were taken 24h post incubation of the conjugates with the lysosomal dye, FluoSpheres ® yellow green, at a dilution of 1/100,000 from the commercial stock and following a 10 minutes incubation with the, mitochondrial dye, MitoTracker Red at 2.5 nM using a Leica TSP Confocal Microscope. Transmission (A), FluoSpheres ® yellow green (B), Mitotracker Red (C), meta-linked 4-carbon, conjugate 6 (D) Overlay of conjugate 6 with FluoSpheres ® yellow green (E) and Overlay of conjugate 6 with MitoTracker Red (F).