Figure 1From: Dynamics of different-sized solid-state nanocrystals as tracers for a drug-delivery system in the interstitium of a human tumor xenograftNormal and tumor vasculatures visualized by intravital imaging. An objective lens of 20× was used in this experiment. (a) Normal vessels are aligned parallel to each other. (b) Tumor vessels have chaotic characteristics, such as uneven diameters and unparallel distribution. Scale bar, 100 μm.Back to article page