Figure 4.

Flow cytometry data.

Notes: (A) Fluorescence histogram for untreated cells (red curve), cells after 1-hour incubation in a solution containing Alexa Fluor-labeled SA only (green curve) and after 1-hour incubation in a solution of SWCNT–biotin–SA (blue curve). (B) Mean green fluorescence of cells vs time of incubation in four SWCNTs (0.05 mg/mL). (C) Mean green fluorescence of cells vs concentration of SWCNT–biotin–SA after 1-hour incubation. Reprinted with permission from Shi Kam NW, Jessop TC, Wender PA, Dai H. Nanotube molecular transporters: internalization of carbon nanotube-protein conjugates into Mammalian cells. J Am Chem Soc. 2004;126(22):6850–6851.¹⁰¹ Copyright 2004 American Chemical Society.

Abbreviations: CNTs, carbon nanotubes; SA, streptavidin; SWCNTs, single-walled CNTs.