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. 2020 May 5;10:7554. doi: 10.1038/s41598-020-64573-5

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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 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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Fabrication of a rifampicin-loaded 3D scaffold. (A) Schematic illustration of the procedure involved in the fabrication of the rifampicin-loaded scaffold using our 3D printing system. (B) Photographs of the rifampicin-loaded scaffold at different concentrations.. Electron micrographs were analyzed using microscope to determine the (C) pore size and (D) strut size of the scaffolds. (E) SEM image of scaffolds with rifampicin concentration of (a,f) Cont, (b,g) 20:1, (c,h) 10:1, (d,i) 5:1, and (e,j) 2.5:1. The image of (f–j) indicate magnified view of images of (a–e), respectively. a–e: x70, f–j: x200, scale bar: 100 um.