Fig. 6From: Assessment of the toxicity and carcinogenicity of double-walled carbon nanotubes in the rat lung after intratracheal instillation: a two-year studyA shows Masson’s trichrome collagen staining of the visceral pleura of rats from the (a) Vehicle, (b) DWCNT 0.5 mg, and (c) MWCNT-7 0.5 mg groups at the final sacrifice. Panel B shows Masson’s trichrome collagen staining of the parietal pleura of rats from the (a) Vehicle, (b) DWCNT 0.5 mg, and (c) MWCNT-7 0.5 mg groups at the final sacrificeBack to article page