Colorimetric Detection System for Salmonella typhimurium Based on Peroxidase-Like Activity of Magnetic Nanoparticles with DNA Aptamers

Figure 7

UV-vis absorption spectra (a) and bar graph at 650 nm (b). The insets in (b) represent images of the well plates for the colorimetric detection of Salmonella sp.

(a)

(b)