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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Adv Drug Deliv Rev. 2013 Jul 12;65(15):1921–1932. doi: 10.1016/j.addr.2013.07.007

Figure 7.

Figure 7

(A) Low resolution TEM image of microglia with amine-functionalized MWCNTs localized intracellularly, both intact individualized MWCNTs (dash box) and structurally deformed MWCNT debris (solid) is exhibited. (B) TEM image with higher resolution showing co-existing intact MWCNTs (top), carbon sheets unraveled form MWCNTs (middle) and deformed MWCNT debris. (C, D, E) Raman spectra taken from the starting MWCNTs before injection and brain sections 2 days and 14 days after MWCNT injection. The corresponding D to G band ratios (ID/IG) are recorded. Reproduced from [86] Copyright Future Medicine 2012.