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. 2017 Jun 13;7:3437. doi: 10.1038/s41598-017-03040-0

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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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Exposure to non-invasive RF field increases diffusive penetration of molecules in 3D tissue. Left: Brightfield image of untreated Capan-1 spheroid; right: DAPI wavelength image. (a) Spheroid untreated with RF and incubated with DAPI for 24 h; (b) Spheroid treated with RF and incubated with DAPI for 1 h; (c) Spheroid treated with RF and incubated with DAPI for 24 h. Spheroid in (b) and (c) is the same lesion. Magnification: 10x.