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We demonstrate a cross-platform approach to simultaneously detect three different pathogens using Raman and UV–vis absorption spectroscopy. Gold (Au), silver (Ag), and Ag–Au core–shell nanoparticles were functionalized with anti-Salmonella typhimurium aptamers, anti-Staphylococcus aureus and anti-Escherichia coli O157:H7 antibodies respectively and labeled with unique Raman reporter molecules. A microfiltration...
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