Fig. 1From: Label-Free 3D Ag Nanoflower-Based Electrochemical Immunosensor for the Detection of Escherichia coli O157:H7 PathogensSchematic illustration of immunosensor fabrication. 1 The coating of Ag@BSA nanoflowers on the surface of the Au electrode. 2 Surface activation by using EDC/NHS and antibody binding onto Ag@BSA nanoflowers. 3 Pathogen capturing based on the prepared immunosensor. 4 EIS measurementBack to article page