蛛丝

Leaves abaxially with at least veins with erect hairs, or sometimes mixed with arachnoid tomentum

叶背面具至少脉具直立毛，或有时与蛛丝状绒毛混生 36

Abaxial surface of leaves with arachnoid hairs, and very prominent parallel cross-bars on veinlets.

叶背面具具蛛丝状毛的毛和在细脉上的非常突出的平行的横脉。

The major ampullate dragline silk of spiders such as Araneus diadematus and Nephila clav

蜘蛛丝的这些性能和特点与蜘蛛的生态策略、生活史及蛛丝蛛网的结构和功能密切相关。

A steady supply of spider silk would be worth billions of dollars-but how to produce it?

如果有稳定的蛛丝的供应，它将是一个价值上亿的产业，但问题是怎么样才能生产出稳定的蛛丝呢？

But wrap a finger of drag line spider silk around your finger and dip it in water, and your finger will turn blue from the contraction of the fiber.

但如果你用一团蛛丝裹住手指，蘸在水里，你会发现手指变蓝了。这是蛛丝纤维收缩造成的。

Leaves adaxially with sparse arachnoid tomentum when young, then glabrescent; branchlets and inflorescence axis with sparse arachnoid tomentum.

幼时的正面的叶具具稀疏蛛丝状毛，后脱落有具稀疏蛛丝状毛的小枝和花序轴。 32 V。 bellula 美丽葡萄

Branchlets and inflorescence axes with arachnoid tomentum; leaflets abaxially with persistent rubiginous arachnoid tomentum.

有蛛丝状绒毛的小枝和花序轴；小叶背面具宿存的锈红色的蛛丝状绒毛。 37 V。 lanceolatifoliosa 鸡足葡萄

Keywords: Key wodrs:Araneus ventricosus;Major ampullate gland;Flagelliform gland;cDNA library;Spider silk protein mRNA

中文关键词：大腹园蛛；主壶腹腺；鞭毛腺；cDNA文库；蛛丝蛋白mRNA

This study separated high quality of steel and high elastic silk gene of major ampullate gland and flagelliform gland of Aranbeus ventricosus,and saparated mRNA ,and published several new gene of silk protein for AvF1(AY174110),AvF2(AY177203),AvFf1(AY587193) in GeneBank.

通过鸟枪法、Southern杂交等方法筛库，在没有借鉴国外丝蛋白基因的基础上，获得具有自主知识产权的蛛丝蛋白mRNA，并将蛛丝蛋白AvF1(AY174110)、AvF2(AY177203)、AvFf1(AY587193)等多个新基因登录GenBank。

Now other country have many reports that Nephila clavipes、Araneus diadematus etc contain 11 kinds of silk protein gene, but not complete.

本研究分离蛛丝刚性弹性好的大腹园蛛主壶腹腺和鞭毛腺，提取总RNA，在国内外首次构建大腹园蛛主壶腹腺和鞭毛腺cDNA文库。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。