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. 2018 Jun 27;4:69. doi: 10.1038/s41420-018-0071-4

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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 Western blot analysis showed that DPSCs expressed CBS, CSE, and MPST as BMMSCs. b, c DPSCs expressed CBS, CSE, and MPST assessed by flow cytometry (b) and immunofluorescence staining (c). d DPSCs produced H₂S in the culture supernatant. Knockdown of CBS or CSE, but not MPST, by siRNA decreased the production of H₂S by DPSCs, while NaHS treatment could upregulate H₂S concentration. **P < 0.01; scale bar: 20 μm. All experimental data were verified in at least three independent experiments