An Aptamer-Based Biosensor for Colorimetric Detection of Escherichia coli O157:H7 Wu, Wenhe ; Zhang, Jie ; Zheng, Meiqin ; Zhong, Yuhong ; Yang, Jie ; Zhao, Yuhong ; Wu, Wenping ; Ye, Wei ; Wen, Jie ; Wang, Qi ; Lu, Jianxin Abstract Publication: PLoS ONE Pub Date: November 2012 DOI: 10.1371/journal.pone.0048999 Bibcode: 2012PLoSO...748999W