Figure 1From: Effect of MWCNT size, carboxylation, and purification on in vitro and in vivo toxicity, inflammation and lung pathology SEM images of MWCNT used in this study. A) narrow/short-original (N/S-O) MWCNT, B) narrow/short-functionalized (N/S-F) MWCNT, C) narrow/short-purified (N/S-P) MWCNT. Length comparison shows in D) narrow/short-functionalized (N/S-F) MWCNT, and E) narrow/long-functionalized (N/L-F) MWCNT. Diameter comparison shows in F) wide/short-functionalized (W/S-F) MWCNT, and G) narrow/long-functionalized (N/L-F) MWCNT.Back to article page