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. Author manuscript; available in PMC: 2019 Jun 1.

Published in final edited form as: Small. 2018 May 7;14(23):e1703915. doi: 10.1002/smll.201703915

Figure 4: — (A) E. coli cell growth was assessed by optical absorbance (OD 600 nm) in a plate reader (Spectro Max M5e, Molecular Devices, Sunnyvale, CA, USA). The cultures were incubated with 12.5, 25, 50, 100 and 200 μg/mL SWNCTs for 24 h in regular LB medium. (B) Scanning electron microscopy (SEM) was used to assess morphological changes in E. coli exposed to sorted and unsorted tubes at 200 μg/mL for 24 h. After fixation and dehydration, the cells were imaged under a JEOL JSM-67 field emission scanning electron microscope at 10 kV. The scale bars represent 2 μm in length.

Figure 4: — (A) E. coli cell growth was assessed by optical absorbance (OD 600 nm) in a plate reader (Spectro Max M5e, Molecular Devices, Sunnyvale, CA, USA). The cultures were incubated with 12.5, 25, 50, 100 and 200 μg/mL SWNCTs for 24 h in regular LB medium. (B) Scanning electron microscopy (SEM) was used to assess morphological changes in E. coli exposed to sorted and unsorted tubes at 200 μg/mL for 24 h. After fixation and dehydration, the cells were imaged under a JEOL JSM-67 field emission scanning electron microscope at 10 kV. The scale bars represent 2 μm in length.