Low-Level Detection of Poly(amidoamine) PAMAM Dendrimers Using Immunoimaging Scanning Probe Microscopy

Figure 2

Representative SPM images of capture surface (1×1 μm) of different concentrations of bound biotinylated G4 PAMAM dendrimers to avidin capture substrate: (a) blank and (b) 7.0×10⁻³ μmol/L, (c) 7.0×10⁻² μmol/L, and (d) 3.28×10⁻¹ μmol/L; (e) a cross-sectional analysis of captured biotinylated G4 PAMAM dendrimers in (d).

(a)

(b)

(c)

(d)

(e)