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- W2333597141 abstract "(BALB/c×C57BL/6)F1マウスに過排卵処置を施し,排卵後,卵管内で一定時間を経過した卵を回収して体外受精させ,遅延受精による卵子の加齢の影響を調べた.体外受精率は,加齢時間が増すほど低下した.3倍体の出現率も加齢時間にともない低くなる傾向がみられた.対照的に1倍体の出現率は,加齢時間が増すほど著しく高くなった.この1倍体の染色体像は,その形態が第2成熟分裂時の染色体像とは異なり,単為発生卵(単一半数体:Uniform haploid)の染色体像に類似しており,加齢による単為発生を推察させるものであった.構造的異常の染色体の出現率は,加齢にともない増加する傾向を示したが,統計的には有意ではなかった.また,性比には,加齢の影響はみられなかった." @default.
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- W2333597141 date "1995-01-01" @default.
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- W2333597141 title "Effects of Postovulatory Egg-Aging in Oviducts on Incidences of Chromosomal Aberrations and Primary Sex Ratios in Mouse Eggs Fertilized In Vitro" @default.
- W2333597141 doi "https://doi.org/10.2508/chikusan.66.918" @default.
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