Sahghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China Abstract: Carboxylesterases are a group of related enzymes that catalyze the hydrolysis of a vast number of ester-containing endogenous and exogenous compounds.

中國科學(xué)院上海生理生態(tài)研究所，上海 200025 摘要：羧酸酯酶水解眾多內(nèi)源和外源含酯的化合物国产美女精选视频。

Objective To study the damage effect of lead acetate on DNA and its mechanism and the changes of antioxidative enzymes in vivo.

目的 探討醋酸鉛對動物體內(nèi)DNA的損傷作用、機(jī)制以及抗氧化酶的變化情況。

The proteins and enzymes in saliva sample were removed by centrifugation and filtration of the mixture of acetonitrile and saliva sample.

將等體積的乙腈和唾液混合亚洲色图偷，然后通過離心和過濾的方法除去唾液樣本中的蛋白質(zhì)和酶。

After freezing, the tissue is powdered and the enzymes are inactivated by precipitation with perchloric acid.

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The company is dedicated to develop and produce a series of nutritional and non-nutritional animal feed additives, including natural pigment, feed enzymes, antioxidant, mould inhibitor, flavor, acidifier and feed premixes and concentrates.

本公司致力于研制和生產(chǎn)包括天然色素国产第一区精品、酶制劑欧美性交片网站、抗氧化劑欧美乱婬视频婬色、防霉劑、調(diào)味劑国产乱了真实在线观看一级、酸化劑日韩新片免费无码观看视频网站下载、預(yù)混合飼料等一系列營養(yǎng)性、非營養(yǎng)性動物飼料添加劑欧美又长又粗性视频。

After seedling trees of Yunhe Snow Pear were polluted by Pb(superscript 2+), Cd(superscript 2+), synthesis of chlorophyll was restrained, toxic effect of Pb(superscript 2+), Cd(superscript 2+) on seedling trees was intensified, membrane lipid peroxidation damage was increased. And the protective enzymes system start-up of polluted seedling trees enhanced antioxidative enzymes activities of seedling trees.

結(jié)論］Pb(上標(biāo) 2+)最刺激得黄色网站、Cd(上標(biāo) 2+)污染云和雪梨苗，抑制葉綠素的合成福利网站在线观看，增強(qiáng)超養(yǎng)陰離子自由基O2(上標(biāo)-對植株的毒害性538在线视频免费播放，使膜脂過氧化損傷程度高，受重金屬污染植株啟動保護(hù)酶系統(tǒng)欧美在线精品大片，以增強(qiáng)植株的抗氧化性久久精品一级无码。

The results suggested that the activities of these enzymes quickly enhanced at 1 d, 3 d, 5 d and 7 d after inoculation by injecting conidia of the false smut fungus at 7-10 d before heading in the resistant cultivars, but slower increase in the susceptible cultivars, and also showed that there was correlations between the cultivar resistance to the disease and the three enzymes.

結(jié)果表明，在抗病品種中苯丙氨酸解氨酶亚洲欧美女同一区二区、過氧化物酶和多酚氧化酶3種酶活性接種后迅速提高www.jsytsm.com，變化幅度較大；而感病品種的酶活性在接種后緩慢增加伊人精品视频中文字幕，變化幅度小尤物网站在线视频免费观看。由此說明，這3種防御酶與水稻抗稻曲病有一定的關(guān)系啊啊啊操死你91视频。關(guān)鍵詞水稻外国操逼；稻曲病国产精品性爱小视频；防御酶

Using a long-term reared housefly population which is very susceptible to pyrethroid insecticides as the susceptible strain, a population collected in 1993 in Shanghai and has been treaded by cyhalothrin as the resistant strain, we bioassayed their susceptibility to organophosphorus, carbamate, pyrethroid and organehloride insecticides. We also investigated the role of metabolic enzymes, i. e. esterase, GST, MFO and of target enzymes, i. e. AChE and 〓-ATPase in resistance to insecticides. Cyhalothrin resistance inheritance, the co-toxicity coefficient of cyhalothrin and methylene dithiocyanate was also studied. The insecticides resistance in adults and larvae of houseflies was compared and the mechanism of resistance differences between adults and larvae was discussed.

本文以采自野外并經(jīng)過室內(nèi)多代篩選的三氟氯氰菊酯抗性家蠅品系和室內(nèi)多年飼養(yǎng)的敏感家蠅品系為試蟲国内黄色网站免费观看a级，測定了抗性家蠅品系和敏感家蠅品系對擬除蟲菊酯殺蟲劑三氟氯氰菊酯、氯菊酯国产丝袜专区在线观看、有機(jī)磷殺蟲劑DDVP亚洲风流A级毛片a、氨基甲酸酯殺蟲劑殘殺威、有機(jī)氧殺蟲劑DDT的抗性水平AV偷摄—国产盗摄，并通過活體增效劑實(shí)驗(yàn)和離體生化實(shí)驗(yàn)研究了抗性品系的解毒酶和靶標(biāo)酶的變化欧美黑人大尺度又粗又长最新章节，本文還研究了三氟氯氰菊酯和增效劑I對抗性家蠅的增效作用及增效機(jī)理、家蠅幼蟲和成蟲對殺蟲劑的抗性差異及其抗性差異的機(jī)理h网站在线看免费。

Methods(1) Construction of plant expression vector containing RS geneThe cloning vector pT-RS was constructed containing RS gene extracted from the leaf tip of Vitis vinifera by PCR amplification and RS sequence was identified by PCR amplification,enzymes digestion and sequence analysis.The plant expression vector containing RS gene was obtained and RS sequence was identified by PCR amplification and double enzymes digestion too.

研究方法(1)含白藜蘆醇合酶基因的植物表達(dá)載體的構(gòu)建提取葡萄基因組總DNA好大好硬好爽高潮视频，通過PCR擴(kuò)增得到RS基因，將此基因連接到克隆載體pGEM-T Vector3344视频，得到重組載體pT-RS男女黄片免费；經(jīng)PCR、酶切及序列分析鑒定后在线看片无码永久免费A，將RS基因克隆到植物表達(dá)載體pBI121啪啪啪日本黄色网站,模特，得到重組載體pBI-RS欧美AAA性爱网站，用PCR及雙酶切方法進(jìn)行鑒定。

The experiment selected dairy fresh milk as raw material, EZAL and MAOLL as fermentation agent, microbial rennet, swine pepsin, lamb rennet, calf rennet, papain and ficin as milk-clotting enzymes to produce hard cheese. This paper studied the physical, chemical and biochemical characteristics of different milk-clotting enzymes during the cheesemaking.

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