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- The oocytes undergoing meiotic division sequentially extrude the first and the second small polar bodies from the large oocytes. 卵母细胞在减数分裂过程中相继排出第一和第二极体。
- Objective:To establish the method of preimplantation genetic diagnosis(PGD) by use of first polar bodies. 目的:建立采用第一极体植入前染色体非整倍体诊断的方法。
- The studies indicated that Inhibiting formation of the first and the second polar bodies in normal diploid zygotes could produce living tetraploid pearl oysters . 比较研究表明，直接抑制二倍体马氏珠母贝受精卵的极体形成可以获得成活的四倍体马氏珠母贝，此方法值得进一步研究。
- Results:The successful biopsy and FISH rate were 94.7% and 86.7% respectively. 61.5% of the first polar bodies was found to be normal, 38.5% was aneuploidy.Conc... 结果:活检成功率为94.;7%25;FISH成功率为86
- The chromosomes within these polar bodies have the same genetic and reproductive poten cials as those left in the oocytes and can be used for production of fertile off spring. 这些极体内的染色体和留在卵母细胞内的染色体同样具有遗传和生殖潜力，可用作生产有生殖能力的后代。
- Mouse oocytes undergo two successive meiotic divisions to generate one large egg with two small polar bodies, which is essential for preserving the maternal resources to support embryonic development. 不对称分裂对于很多生理功能都至关重要，包括干细胞增殖，发育的多样性，卵的减数分裂。
- The first polar body can be labeled by FITC|PNA indicating that it contains CGs. 体外成熟过程中所排出的第 1极体也被 FITC- PNA所标记 ,说明第 1极体中含有皮质颗粒。
- The two systems of government are polar opposites. 这两种政体正好相反。
- Percentage of undergoing GVBD and the first polar body extrusion in COC groups was higher than that in DO groups ( P<0.05, P<0.01) . COC各组的GVBD发生率和FP排除率明显高于DO各组(P<0.;05，P<0
- The secondary oocyte now divides again into two new cells of unequal size: a relatively large ootid (mature egg cell) and a minute second polar body. 此时，次级卵母细胞又分裂成两个大小不对等的新细胞：一个相对很大的卵子（成熟卵细胞）和一个微小的次级极体。
- Tetraploids in Jinjiang oyster, Crassostrea rivularis, were induced by inhibiting the first polar body (PB1) with cytochalasin B (CB). 采用细胞松弛素B(CB)处理受精卵,抑制第一极体的排放,对近江牡蛎四倍体的诱导和培育进行了研究。
- Polyploid of Pacific abalone, Haliotis discus hannai Ino, was induced by blocking Polar body I with caffeine-heat shock treatments. 报道了用咖啡因加热休克抑制受精卵的第一极体的释放诱导皱纹盘鲍（Haliotis discus hannai Ino）多倍体的研究结果。
- The purpose of IP logging is to determine the depth and geometry of the polarizable bodies. IP测井的目的在于确定极压体的深度和产状。
- Let us now consider polarizable bodies whose resistivities are similar to that of the geological environment. 现在我们来研究电阻率与地质介质相同的极化体。
- Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage. 目的探讨卵细胞第一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- The results showed that: (1) 5, 10 and 20 mg/kg bw (body weight) of L-NAME inhibited significantly the extrusion of first polar body of mouse oocyte(P <0.01), especially 10 mg/kg bw. But they all had little impact on germinal vesicle breakdown (P >0.05). 结果表明;(1)单独注射5、10、20mg/kg体重L-NAME均能显著抑制卵母细胞第一极体的释放(P<0.;01);尤以10mg/kg体重L-NAME组作用最为明显;各剂量组对生发泡的破裂均无影响(P>0
- Our bodies need adequate nutrition. 我们的身体需要充足的营养。
- The secretion of bile is useful for our bodies. 胆汁的分泌对我们的身体很有用处。
- Tetraploid zhikong scallop Chlamys farreri (Jones & Preston) was produced by inhibiting the first polar body (PB1) in newly fertilized eggs with 0.5 mg/L cytochalasin B (CB). Five replicates were conducted with different batches of brood stocks. 以栉孔扇贝Chlamysfarreri为材料 ;采用浓度为 0 .;5mg/L的细胞松弛素B(CB)处理、抑制受精卵第一极体排放的方法;进行四倍体诱导研究。
