Research Article

Comparative Assessment of Affinity-Based Techniques for Oriented Antibody Immobilization towards Immunosensor Performance Optimization

Figure 5

Fluorescent microscopy images of laser-printed secondary antibody tagged with Cy5 (50 μg/ml) on (a) GOPTS-, (b) GOPTS-APBA-, and (c) GOPTS-protein A/G-modified Si3N4 surfaces.
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