Figure 5
From: Electrochemical aptasensor for lung cancer-related protein detection in crude blood plasma samples
(A) Mapping of (a) iron ions and (b) gold ions of the electrodes; (с) contrast EM; (d) overlay of iron and gold ions and contrast EM of the working electrodes surfaces of LC-18-based aptasensors with the formation of targets from the following samples with IH-SAB 4C–8C beads: LCP2 blood plasma sample, LCPP at 23 ng/mL concentration, HP11 blood plasma sample. (B) The specters of iron and gold ions from the working electrodes surfaces incubated with LCP2 blood plasma sample, LCPP at 23 ng/mL, HP3 blood plasma sample. The percentage ratios of iron compared to gold are 3.48%, 2.14%, 0.64% for LCP, LCPP and HP respectively.
