该时相的特点是:卵黄积 累至充满,卵母细胞体积增长到最大,到生长成熟;卵核或生殖泡(germinalvesicle, GV)偏位,生殖泡移向动物性极精孔细胞所在位置的下方;两层滤泡细胞、放射膜 和精孔细胞更加明显清楚。
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卵丘-卵母细胞复合物各组的卵母细胞生殖泡破裂发生率和第一极体排除率明显高于裸卵各组(P<0.05)。
Percentage of undergoing germinal vesical breakdown and PB1 extrusion in cumulus-oocyte complex groups was higher than that in denuded oocyte groups(P<0.05).
结论卵巢生殖细胞肿瘤中无性细胞瘤和胚胎性癌分化水平最接近于生殖母细胞至胚泡阶段。
Conclusions the differential level of dysgerminoma and embryonal carcinoma approximates the stages of gonocyte and blastocyst.
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