Figure 3. Characteristics and stability of the LP-Td. a) TEM
images of LP-Td. The scale bar is 200 nm. b) The hydrodynamic size of
LP-Td determined by DLS analysis. c) Enzymatic stability of Td and
LP-Td. 0.2 μM cy3/cy5 doubly labeled Td or LP-Td were incubated with
DNase in different concentrations for 15 min. “ns”: no significance;
“**”: p <0.01.