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. 2020 Aug 7;10:13332. doi: 10.1038/s41598-020-70258-w

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© The Author(s) 2020

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 licens»e, 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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Cell electrotransfection and viability rates using Bio-Rad buffer, OptiMEM-GlutaMAX, and PBS. Electrotransfection efficiency of mouse iPS (a and b) and MEF cells (c and d). In each electroporation reaction, 20 µg (1.5–2.5 µg/µl) of the reporter plasmid (encoding mCherry) was pre-mixed with cells and underwent electroporation using the square-wave protocol consisted of 250 V for iPS and 300 V for MEF cells, 2 pulses, each 10 ms length, 10 s interval, and 4 mm cuvette. The reporter expression was assessed 36 h after electroporation under a fluorescence microscope. White and black bars are electrotransfection efficiency and cell viability, respectively. Bars with different A, B, C or a, b, c letters are significantly different (p value < 0.05). Scale bar is 100 µm; for MEF cells, a higher magnified photo is indented in the left part of each image with a scale bar of 5 µm. Results are means and standard deviation (n > 3).