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. 2020 Apr 28;10(5):45. doi: 10.3390/bios10050045

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

(A) Tetrameric streptavidin binding biotin molecules, reprinted from the paper [118]. (B) Human osteopontin aptasensor utilizing the streptavidin/biotin interaction [119,120].