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Histopathology of larvae exposed to MWCNTs. Zebrafish larvae were incubated with 0.005, 0.05, 0.5, 5, and 50 ppm of MWCNT-S and MWCNT-L for 48 h; brain, heart and liver phenotype (cells size and shape) were analyzed. Representative photomicrographs of hematoxylin and eosin staining of the whole body and tissue sections are shown.
