Figure 3 | Scientific Reports

Figure 3

From: High specificity THz metamaterial-based biosensor for label-free transcription factor detection in melanoma diagnostics

Figure 3

Resonance shifts for different measurement spot groups in the sample measurement series, using the sample measurement treatment. Reference spots were treated either with water (Group I) or PBS (Group II) resulting in a complete shielding of the gold surface. Sample measurement spots contain capture DNA which refers to either a ssDNA film (Group III) or a dsDNA film (Group IV), allowing a selective immobilization of EGR2 transcription factors.

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