polar bodies

同根派生

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。