polar bodies 中文意思是什麼
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During male gametogenesis, the spermatogonia became primary spermatozoa through mitosis, and then became fourth equivalent cytoplasm, round sperm through meiosis. after maturation, they participated in embryo development with the mature oocyte through fertilization. but in female gametogenesis, the primary oocyte formed a matured egg and 1 ~ 3 polar bodies ( pb )
雄性動物精子發生過程中精原細胞最後一次有絲分裂形成二倍體精母細胞后，經過兩次減數分裂形成了四個含等量細胞質、圓形的精子細胞，最終發育成四個具有正常生理功能的精子，與成熟卵母細胞受精后參與胚胎發育。 -
Study on the first and the second polar bodies in mammals
哺乳動物第一和第二極體的研究 -
The air picks up moisture from the polar ice cap and bodies of water it may pass over.
空氣從它可能經過的北極冰帽和水域吸收水分。
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