Glioblastoma bearing mice were injected with unmodified (D-OH), glucose- (D-GLU), mannose- (D-MAN), and galactose-conjugated (D-GAL) dendrimers on day 14 after tumor inoculation. All dendrimers rapidly clear from the body, with less than 1% of the initial injected dose remaining per mL of plasma after 24 hours. Conjugation with sugars alters systemic biodistribution. * p < 0.05, ** p < 0.01, *** p < 0.001.