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. 2018 Jun 29;11:55. doi: 10.1186/s13048-018-0427-7

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© The Author(s). 2018

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. 4 — A TUNEL analysis of granulosa and theca cells in control, PCOS, resveratrol, metformin and metformin+resveratrol groups. a; control, b; PCOS, c; solvent, d; resveratrol, e; metformin and f; metformin+resveratrol groups. Apoptotic cells are indicated as brown and shown with black arrows. B Apoptotic index of TUNEL (+) granulosa and theca cells in control PCOS, resveratrol, metformin and metformin+resveratrol -treated rats’ follicles