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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Nano Lett. 2009 Jan;9(1):433–436. doi: 10.1021/nl803328v

Figure 2.

Figure 2

Self-assembly and characterization of L-DNA nanotubes and in comparison to D-DNA nanotubes. a) Assembly scheme. b) The opposite chirality of the L- (left-column) and D-(right column) DNA nanotubes revealed by the defects (pointed out by the arrow heads) on the tubes observed under AFM. Scale bar: 500 nm. Zoom-in images are 500×500 nm2. c) Fluorescence microscope images showing DNA nanotubes after exonuclease treatment. L-DNA tubes (left) persisted integrity while the D-DNA tubes (right) were digested. Scale bar: 20 μm.