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The dorsoventral polarity of Drosophila egg is established by means of signaling between the germ line-derived oocyte and the surrounding somatic follicle cells.

果蝇胚胎发育是由四种别控制头尾、前、后以及背腹

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In the posterior segment, its dorsoventral axis was the longest, and could be divided into two parts: the dorsal and the ventral parts.

后段背腹径最长,可为背侧和腹侧,两细胞界清晰。

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双语版

In 1822, a French naturalist by the name of Geoffrey Saint-Hilaire cut open a lobster and noticed that its arthropod anatomy was essentially a mirror image of our own, along what is called the dorsoventral axis.

1822年,一位名叫杰弗里·圣希拉尔的法国博物家切开了一龙虾,发现它的解剖结构基本上就如同我们自己身体结构的镜着背房中轴线的。

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Gladstone, Gladstone bag, glady, Gladys, glaebule, glair, glaireous, glairin, glairy, glaive,

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3G, 401(K), a,
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