Biodistribution of PEG-modified gold nanorods in tumor-bearing mice. The biodistribution of PEG-modified gold nanorods at 72 h after intravenous injection was compared. Closed bars and open bars indicate the biodistribution of PEG-modified gold nanorods at aspect ratios of 5.0 (n = 5) and 1.7 (n = 4), respectively. (A) The percentage of injected dose per organ and (B) percentage of injected dose per gram of tissue or milliliter of blood, respectively. Bars are the standard error from the mean.
Akiyama et al. Nanoscale Research Letters 2012 7:565 doi:10.1186/1556-276X-7-565