Electrochemical Immunoassay of <i>Escherichia coli</i> O157:H7 Using Ag@SiO<sub>2</sub> Nanoparticles as Labels

<table>(a) TEM image of Ag@SiO<sub>2</sub>. (b) UV-vis spectrum of Ag@SiO<sub>2</sub>.</table>

Journal of Analytical Methods in Chemistry

Figure 1: Electrochemical Immunoassay of <i>Escherichia coli</i> O157:H7 Using Ag@SiO<sub>2</sub> Nanoparticles as Labels 