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. Author manuscript; available in PMC: 2010 Jul 25.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2008 Nov 19;19(1):1–18. doi: 10.1038/jes.2008.71

Figure 11.

Figure 11

(A) Schematic of a disposable EC immunosensors containing a primary capture region using an immobilized QD-tagged anti-prostate antigen antibody, a secondary capture regions containing secondary antibodies. Upon treatment with 1M HCl at the secondary region, cadmium ions are released and electrophorectically migrate to a bismuth/mercury-coated screen-printed electrode beneath a nitrocellulose membrane. (B) Sample is added to the strip and the electrical pins of the strip are inserted into an electronic control box of the portable EC platform. Voltage is applied to the strip and the signal output is displayed on a PC. Figure is adapted from Liu et al. 2007 with permission.