Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13036-019-0223-y/MediaObjects/13036_2019_223_Fig4_HTML.png)
Monitoring the enriching situation of the dynamic libraries in SELEX process. a Binding signal of DDA with the libraries of the representative rounds; b analysis of the intensity. DDA: 2,2-bis(4-chlorophenyl) acetic acid; BB: binding buffer; Data represent mean ± SEM. *P < 0.05, set control =1.0. SYBR Green I as the DNA indicator