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. 2017 May 18;7:2107. doi: 10.1038/s41598-017-02270-6

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(A) Growth observations of L929 cells treated with SCWF (a,a’), SCWF-Ag5 (b,b’), and SCWF-Ag6 (c,c’). (B) Calcein-AM/PI Double Stain Kit assay of L929 cells upon treatment with SCWF (a), SCWF-Ag5 (b) and SCWF-Ag6 (c). Live cells are stained by Calcein AM dye and produce an intense uniform green fluorescence (ex/em ~495 nm/~515 nm). Dead cells are stained by Calcein PI dye and emit bright red fluorescence (ex/em ~495 nm/~635 nm). The scale bar represents 100 μm.