letter . 2020 Aug 24;20(17):4776. doi: 10.3390/s20174776
© 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/).
Figure 5.
Washing steps of the streptavidin monolayer.