Fig. 6From: Effect of sp3/sp2 carbon ratio and hydrodynamic size on the biodistribution kinetics of nanodiamonds in mice via intravenous injectionComparison of the lung distribution of NDs without serum coating (lowND and highND) and with serum coating (lowSND and highSND). The time-point for comparison was on (a) day 1 and (b) day 7 post-injection. (c) Representative dark-field and bright-field images of NDs in the lung at day 7 post-injection. The data are expressed as mean ± SEM and n = 5 for each group. Lung tissue was stained with PSR and scale bar = 100 μm. MLN, mesenteric lymph nodeBack to article page