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Calibration curves of S. typhimurium (a) and L. monocytogenes (b) in the enhanced ICAs using PBNPs and the appearance of test strips. Concentrations of Salmonella/Listeria cells were 2 × 107/7 × 108 (1), 2 × 106/7 × 107 (2), 2 × 105/7 × 106 (3), 2 × 104/7 × 105 (4), 2 × 103/7 × 104 (5), 2 × 102/7 × 103 (6), and 20/700 (7) cells/mL (n = 3).
