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. 2016 Jul 18;6(3):36. doi: 10.3390/bios6030036

Figure 6.

Figure 6

Electrical prototype of an optical reader for cTnI detection. (A) Optical reader indicating an “OFF” output state on an antibody conjugated sensor; (B) optical reader indicating an “ON” state upon the addition of antigen sample. The binding between of biomolecules decreases the impedance below the threshold value thereby turning the output LED to “ON” state.