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. 2017 Jul 12;7:5199. doi: 10.1038/s41598-017-05436-4

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© The Author(s) 2017

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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Droplet fusion and subsequent single-cell WGA in sd-MDA. (a) Histograms of droplets before (Cell lysate droplet: blue) and after fusion (SAG droplet: red). (b) Fluorescence image of droplets after the 1^st-round MDA reaction. E. coli cells were introduced at 0.1 cells/droplet and their genomes were amplified for 2 h with Evagreen dye. Scale bar; 100 μm. (c) Time-dependent appearance of the fluorescence signal during amplification of single E. coli genome. All data are presented as averaged intensities of fluorescent positive droplets measured with SD, and 100 droplets were analyzed at each time point. (d) Relationship between introduced E. coli cell concentration and the number of fluorescent positive droplets.

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