Zimmer, C., Wright, S. C., Engelhardt, R. T., Johnson, G. A., Kramm, C., Breakefield, X. O., & Weissleder, R. (1997). Tumor cell endocytosis imaging facilitates delineation of the glioma-brain interface. Experimental Neurology, 143(1), 61–69. https://doi.org/10.1006/exnr.1996.6350