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. 2018 Aug 23;64(6):503–510. doi: 10.1262/jrd.2018-080

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This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: https://creativecommons.org/licenses/by-nc-nd/4.0/)

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Fig. 5. — Relationships between antral follicle counts (AFC), the production of estradiol-17β (E₂) and progesterone (P₄) by oocyte-cumulus-granulosa complexes (OCGCs), and the E₂/P₄ ratio in culture media. ^a–c Different letters indicate significant differences between different culture periods in the same group (P < 0.05). * An asterisk indicates a significant difference between the low and high AFC groups (P < 0.05). Numbers in parentheses indicate the number of OCGCs on the same day. Error bars indicate SEM.