The manuscript "Temporal Heterogeneity in Blood Supply in Human Tumor Xenografts" by Brurberg et al. refers to two supplementary movies availible for download below. (To view the movies you may need to right click on "here", and save the files on you're computer by choosing "Save target as...")
Circulating white blood cells can be arrested in narrow passageways in the tumor vasculature. An example that is obtained by intravital transmission microscopy and can be downloaded here.
Tumor draining venules can be characterized by low blood flow velocities and abnormalities like pulsating flow and reversed flow direction. An example obtained from dorsal window chamber experiments can be downloaded here.