三叶的

Objective To clone human intestinal trefoil factor (hITF/hTFF3) gene into an eukaryotic expression vector for its expression in eukaryotic cells.

目的 构建人肠三叶因子(hITF/hTFF3)的真核载体并在真核细胞中表达。

AIM: To investigate the protein expression of the trefoil factor family 2 (TFF2) in fundic glands with Helicobacter pylori infection.

摘要目的：探讨三叶因子2(TFF2)在幽门螺杆菌感染胃体腺黏膜中表达的意义。

A plant of the genus Trifolium.

三叶草属的一种植物。

Secondary and tertiary venation of leaves obscure, especially abaxially

叶的次生和第三脉不明显，特别背面 13

Extraction technology of pectin from Akebia trifoliate koiaz peel s was studied by acid in this study.

本实验采用酸解铁盐沉析法，从三叶木通果皮中提取到了质量较高的果胶。

Extraction technology of pectin from Akebia trifoliate koiaz peels was studied by acid in this study.

本实验采用酸解铁盐沉析法，从三叶木通果皮中提取到了质量较高的果胶。

The extracting conditions of pectin from akebia trifoliate koiaz peels with the ways of ethanol precipitation or FeCl3 solutions were studied.

以三叶木通果皮为原料，分别采用乙醇沉析法和铁盐沉淀法探讨了提取果胶的最佳工艺。

The optimal conditions for extraction of saponins PD from Akebia trifoliate were as follows: 80 ml of 70% ethanol, 90 min action duration, then extractived by n-butyl alcohol for 3 times, hydrolyzed with 36% hydrochloric acid for 4 h at 70%, and extractived by chloroform.

结论］三叶木通中常春藤皂苷的最佳提取工艺为：70%甲醇溶液80 ml超声提取90 min，水饱和正丁醇萃取3次，36%盐酸4 ml，70℃水浴回流水解4 h，氯仿萃取2次，合并氯仿层，旋转蒸干后甲醇溶解定容。

dicotyledonous plant for Lardizabalaceae Shiraki pass or plant Akebia trifoliata, Akebia stem wood.

为双子叶植物药木通科植物白木通或三叶木通、木通的木质茎。

Bidens pilosa is one of the noxious invasive weed in Asteraceae.

三叶鬼针草是一种危害严重的菊科入侵植物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。