341260.fig.002a
(a)
341260.fig.002b
(b)
341260.fig.002c
(c)
341260.fig.002d
(d)
341260.fig.002e
(e)
Figure 2: Representative SPM images of capture surface ( μm) of different concentrations of bound biotinylated G4 PAMAM dendrimers to avidin capture substrate: (a) blank and (b) μmol/L, (c) μmol/L, and (d) μmol/L; (e) a cross-sectional analysis of captured biotinylated G4 PAMAM dendrimers in (d).