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. 2016 Oct 24;16:231. doi: 10.1186/s12870-016-0920-3

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© The Author(s). 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Identification of (6-hydroxyl-1H-indol-3-yl) carboxylic acid methyl ester in Clematis terniflora DC. leaves. Methanol extracts were obtained from C. terniflora leaves pre- and post-treatment with high level of UV-B irradiation for 5 h followed by an incubation for 36 h in the dark (UV-B + Dark), and then analyzed using HPLC-TOF-MS/MS. a HPLC-TOF-MS/MS spectrum of (6-hydroxyl-1H-indol-3-yl) carboxylic acid methyl ester (negative mode) post-treatment. b Statistics of peak area of (6-hydroxyl-1H-indol-3-yl) carboxylic acid methyl ester pre- and post-treatment. Data are shown as the mean ± SD from three independent biological replicates. Asterisks indicate significant differences as measured by Student’s t-test (**P < 0.01)