Fig. 6
Fluorescence images of bacteria S. typhimurium treated with the biotin-labeled aptamer and SA-FSiNPs in the polluted chicken samples (A) and in the normal chicken samples (B). a1 and a2 represent the bright-field and fluorescence microscopy pictures in the experimental group, respectively. b1 and b2 represent the bright-field and fluorescence microscopy pictures in the control group, respectively. All images were obtained with fluorescence microscopy (100 × oil). Scale bar = 5 μm