Fig. 4From: Assessment of the toxicity and carcinogenicity of double-walled carbon nanotubes in the rat lung after intratracheal instillation: a two-year studyMediastinal lymph nodes of rats administered 0.5Â mg DWCNT (A) or 0.5Â mg MWCNT-7 (B). Both fibers are shown to translocate from the alveoli to the mediastinal lymph nodesBack to article page