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. 2020 Aug 18;1:100034. doi: 10.1016/j.sintl.2020.100034

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© 2020 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 3 — Development of gold nanoparticles (AuNPs)-based colorimetric biosensors to detect sequence-specific protein-DNA binding: (a) ER-ERE binding (b) SSB-ssDNA binding (d) segmented ER-ERE binding (d) p53-RE binding, using different biomolecular interactions induced particle aggregation strategies. Row (i) show the sensing principles of the colorimetric assay and row (ii) show the representative photos and UV–vis spectra for each nanoparticle biosensor. Adapted with permission from Ref. [[46], [47], [48],50]. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)