精子與卵子的融合，象徵著一個新生命的誕生。652Please respect copyright.ＰＥＮＡＮＡHXcaOTNIWp
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（圖2）近來陸續有研究發現，精子的尾部有著名為Glycylation的結構，由至少三個名為Glycine的氨基酸組成。652Please respect copyright.ＰＥＮＡＮＡit1OyjxHKT
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（圖3）尾部擁有Glycylation結構的精子，接近9成時間都會直行。652Please respect copyright.ＰＥＮＡＮＡnmnbdrt208
而缺乏該結構的精子，則有接近8成的時間會原地打轉。652Please respect copyright.ＰＥＮＡＮＡAnabBGFF5i
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（圖4）大概是高機率原地轉圈的關係，尾部缺乏Glycylation結構的精子，與卵子結合的機率將會大減。652Please respect copyright.ＰＥＮＡＮＡtf1V9P1deT
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尾部缺乏Glycylation結構的精子，其蛋白質Dynein的內部組成結構亦有所不同。652Please respect copyright.ＰＥＮＡＮＡZBpeO2VMoP
這亦相信是導致精子原地轉圈的主要原因之一。652Please respect copyright.ＰＥＮＡＮＡpSkYhRo934
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如何讓男士們的精子尾部結構保持合適數量的Glycylation結構，將有可能是解決不育的其中一道手段。652Please respect copyright.ＰＥＮＡＮＡ0cv3JYxRyU
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