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. Author manuscript; available in PMC: 2017 Aug 16.
Published in final edited form as: Environ Sci Technol. 2016 Jul 26;50(16):8876–8885. doi: 10.1021/acs.est.6b01916

Figure 2.

Figure 2

Nomarski images of T. thermophila grown without MWCNTs (A–D), with 0.3 mg/L (E–H) and 1 mg/L (I–L) MWCNTs in the rich growth medium for 2 h (A, E, I), 8 h (B, F, J), 16 h (C, G, K) and 22 h (D, H, L). MWCNT aggregates internalized by phagocytosis appear as black areas in the food vacuoles of the cells grown with MWCNTs (E –L) while no black spots were detected in the control cells (A–D).