Figure 3From: Biopersistence of silver nanoparticles in tissues from Sprague–Dawley rats Blood silver concentrations ( n g/g tissue wet weight) before and after cessation of silver nanoparticle administration. The rats were allowed to recover for 1, 2, and 4 months following 28 days of oral silver nanoparticle exposure. A. Male (10 nm). B. Female (10 nm). C. Male (25 nm). D. Female (25 nm).Back to article page