Effect of exogenous human chorionic gonadotropin on ovulation in mice by S. Ya. Amstislavsky, S. V. Ranneva, D. S. Ragaeva, E. A. Chuyko, A. M. Popkova, E. Yu. Brusentsev

“…No significant differences were found in the total number of ovulated oocytes or in the number of immature (without a polar body) ovulated oocytes; nor were there differences between the groups in the number of oocytes with a developing polar body. …”
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Freezing of Oocytes and Its Effect on the Displacement of the Meiotic Spindle: Short Communication by János Konc, Katalin Kanyo, Rita Kriston, József Zeke, Sándor Cseh

“…However, in 94 of these 177 oocytes (53.1%), the spindle reformed in a different position/location relative to the polar body. Our results show that after thawing and culture in half of the spindle-positive oocytes the spindle was detected in a new location, indicating that the spindle and the polar body move relative to each other.…”
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A Live Birth Subsequent to IVF following Egg Retrieval Only 12 Hours after hCG Priming by Limor Man, Joel Baron, Iris Har-Vardi, Eitan Lunenfeld, Eliahu Levitas

“…The eggs were cultured in vitro and ICSI was performed following polar body extruded after 24 hours in culture. After additional 24 hours a 4-cell embryo was developed and ET was performed. …”
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Cumulus cell expansion, nuclear maturation and embryonic development of bovine cumulus-oocyte complexes matured in varying concentrations of follicular fluid. by Verónica M Negrón-Pérez, Abdullah Al Naib, Abigail L Zezeski, Victoria L McCracken-Harlow, George A Perry, Alan D Ealy, Michelle L Rhoads

“…The rate of nuclear maturation as determined by the presence or absence of the first polar body was similar between control (0% FF) and treated (75% FF) groups. …”
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Biotechnological bases of the development of cloned pig embryos by A. V. Lopukhov, G. N. Singina, N. A. Zinovieva

“…To perform the reconstruction, a somatic cell is placed, using micro-tools, in the perivitelline space, where the first polar body was previously located, or in the cytoplasm of an enucleated oocyte. …”
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Pathogenic variants of TUBB8 cause oocyte spindle defects by disrupting with EB1/CAKP5 interactions and potential treatment targeting microtubule acetylation through HDAC6 inhibiti... by Hui Luo, Jianhua Chen, Cao Li, Tian Wu, Siyue Yin, Guangping Yang, Yipin Wang, Zhihan Guo, Saifei Hu, Yanni He, Yingnan Wang, Yao Chen, Youqiang Su, Congxiu Miao, Yun Qian, Ruizhi Feng

“…More importantly, selective inhibition of HDAC6 by culturing TUBB8‐D417N oocytes with Tubacin or Tubastatin A showed morphologically normal spindle and drastically recovered polar‐body extrusion rate. These rescue results shed light on the strategy to treat meiotic defects in a certain group of TUBB8 mutated patients. …”
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