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. 2018 Oct 31;8:16103. doi: 10.1038/s41598-018-34532-2

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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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Follicle-cell cluster-specific downregulation of s38 protein severely harms fly’s fertility. (A) Eclosion-efficiency graphs of both control (c355-GAL4/+) (n = 60) and s38-downregulated (c355 > s38_RNAi) (n = 60) flies, for a thirty-days period, illustrating the severe reduction of fecundity capacity in s38-targeted flies. (B) Bar-chart presenting the eclosion-efficiency percentage of different egg categories with respect to their dorsal-appendages length. Laid eggs with (comparatively) longer in length (but still dysmorphic) dorsal appendages (n = 76) are strongly associated with increased percentage of hatching competence, as compared to eggs carrying short in length (and dysmorphic) dorsal appendages (n = 147). (C) Scanning electron micrograph of the operculum area of a representative s38-targeted laid egg, bearing a micropyle with blocked sperm opening and spermatozoa (white arrowheads) on its surface. (C′) Higher-magnification image of the clogged micropyle. M: Micropyle and DAs: Dorsal Appendages. Scale Bars: 50 μm in C; 5 μm in C′. *p < 0.05.