Fig. 3From: Size effect of Au/PAMAM contrast agent on CT imaging of reticuloendothelial system and tumor tissueSize effect of Au/PAMAM contrast agent on CT imaging of reticuloendothelial system. a Size effect on liver imaging, the typical images of transverse slices of the top of liver were given. b Detailed CT values of liver imaging. c Au content in corresponding livers detected via ICP-AES at 4 h post injection. d In vitro verification of size effect on endocytosis tested after 1 h co-incubation (blank columns) and after 4 h co-incubation (grey columns) with Au/PAMAM concentration at 10−7 μg/cellBack to article page