Single versus double blastocyst transfer in first and second frozen-thawed embryo transfer cycle in advance-aged women: a two-center retrospective cohort study by Yuxi Zhou, Hui Ji, Mianqiu Zhang, Juanjuan Zhang, Xin Li, Junqiang Zhang, Xiufeng Ling, Li Chen, Chun Zhao

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Prolonging the time of progesterone supplementation to improve the pregnancy outcomes of single day 6 blastocyst transfer in frozen-thawed cycles: study protocol for a randomized controlled trial by Manlin Xu, Yuan Yan, Xiaoyue Shen, Haixiang Sun, Guijun Yan, Na Kong, Yue Jiang

Subjects: “…Blastocyst…”
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The influence of day 3 embryo cell number on the clinical pregnancy and live birth rates of day 5 single blastocyst transfer from frozen embryo transfer cycles by Jie Wang, Zhenyu Diao, Junshun Fang, Lihua Zhu, Zhipeng Xu, Fei Lin, Ningyuan Zhang, Linjun Chen

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In vivo generation of bone marrow from embryonic stem cells in interspecies chimeras by Bingqiang Wen, Guolun Wang, Enhong Li, Olena A Kolesnichenko, Zhaowei Tu, Senad Divanovic, Tanya V Kalin, Vladimir V Kalinichenko

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Embryo Genetics by Carmen Rubio, Carlos Simón

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Advances in research to restore vision by Kun Do Rhee

Subjects: “…blastocyst complementation…”
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Is the hypothesis of preimplantation genetic screening (PGS) still supportable? A review by Norbert Gleicher, Raoul Orvieto

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The effect of an extended culture period on birth weight among singletons born after single or double vitrified embryo transfer by Ningling Wang, Ningling Wang, Kaibo Lin, Xinxi Zhao, Ping Zhang

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Odds and Predictors of Monozygotic Twinning in a Multicentre Cohort of 25,794 IVF Cycles by Nikit Kadam, George Woodhead, Louise Kellam, Alison Campbell, Kanna Jayaprakasan

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Slow Development of a Day 5 Fresh Transferred Embryo Leads to Reduced Live Birth Rate but Not Birthweight: A Multicenter Retrospective Cohort Study by Kate Watson, Kee Ong, Irving Korman, Ross Turner, David Shaker, Steve Mokrzecki, Beverley Vollenhoven, Deirdre Zander-Fox, Yanhe Liu

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The day of embryo transfer affects delivery rate, birth weights, female-to-male ratio, and monozygotic twin rate by Valentina Sotiroska, Zorancho Petanovski, Gligor Dimitrov, Makjuli Hadji-Lega, Damjan Shushleski, Stefan Saltirovski, Vladimir Matevski, Simona Shenbakar, Sasho Panov, Lars Johansson

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Preimplantation genetic testing in couples with balanced chromosome rearrangement: a four-year period real world retrospective cohort study by Fan Zhou, Jun Ren, Yutong Li, Yuezhi Keqie, Cuiting Peng, Han Chen, Xinlian Chen, Shanling Liu

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Editorial: Xenotransplantation for the therapy of diabetes: A new look by Kazuhiko Yamada, Rita Bottino

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Can expelled cells/debris from a developing embryo be used for PGT? by Adva Aizer, Noa Harel-Inbar, Hagit Shani, Raoul Orvieto

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Oocyte Quality, In Vitro Fertilization and Embryo Development of Alpaca Oocytes Collected by Ultrasound-Guided Follicular Aspiration or from Slaughterhouse Ovaries by Leandra Landeo, Michele Zuñiga, Teddy Gastelu, Marino Artica, Jaime Ruiz, Mauricio Silva, Marcelo H. Ratto

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Monitoring potentially pathogenic protists in sewage sludge using Metataxonomics by Nicolas Rozo-Montoya, Katherine Bedoya-Urrego, Juan F. Alzate

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Direct embryotoxicity of chromium (III) exposure during preimplantation development by Yuhe TIAN, Qisheng ZHU, Jiayu YUAN, Robert KNEEPKENS, Yuan YUE, Chao ZHANG

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Is day 7 culture necessary for in vitro fertilization of cryopreserved/warmed human oocytes? by Xiangli Niu, Cassie T. Wang, Richard Li, Ghassan Haddad, Weihua Wang

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Impact of progesterone concentration on human chorionic gonadotropin trigger day on clinical outcomes with one top-quality cleavage-stage embryo or blastocyst transfer in fresh in vitro fertilization cycles by Jianing Xu, Cuilian Zhang, Shuna Wang, Shaodi Zhang

“…Multivariate regression analysis, curve fitting, and threshold effect analysis were performed.ResultsA significant association was found between the progesterone concentration and clinical pregnancy rate (adjusted OR, 0.77; 95% CI, 0.62–0.97; P = 0.0234), especially in blastocyst transfer (adjusted OR, 0.56; 95% CI, 0.39–0.78; P = 0.0008). …”
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Slightly Elevated Progesterone on HCG Trigger Day Has an Impact on Pregnancy Outcomes of Fresh Single Blastocyst Transfer Cycles Under an Early Follicular Phase Prolonged Protocol Cycle by Wei L, Zhao Y, Xu C, Zhang C

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