showing spatial distribution of PLGA NPs and cisplatin (CDDP) in the three compartments of the model. NP aggregation was varied from low (5×5 blocks), medium (10×10 blocks), and high (15×15 blocks). Images are from the first output interval (immediately after bolus injection of CDDP-loaded NPs (Panels A, C, E) and the second output interval (after the drug has taken effect (Panels B, D, F). Drug concentration is shown for extracellular (μM), cytosolic (Fmol × hr), and DNA-bound (Fmol × hr) compartments. Colors are as in Figure 1. Bar = 200 μm.