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Percentage of injected dose / g of kidney tissue for PAMAM dendrimers and HPMA copolymers; Values are Mean +/- SEM, n=5; except n=4 for 5 min HPMA copolymer (52 kDa), 2 hr HPMA copolymer (26 kDa) and G5.0-OH; 6 hr and 24 hr G7.0-OH and n=3 for 1 wk HPMA copolymer (52 kDa). *** indicates a statistically significant difference, p < 0.001.
