lethal dose 50

The results showed that the minimal lethal dose of Norfloxacin to embryos is 320mg/ kg embryo weight, and the lethal dose 50% ( LD60) for 3-day-old chicks 4 985+ 753.18 tag/ kg body weight.

结果表明，氟哌酸对鸡胚的最小致死剂量为320mg/kg胚重；对3日龄雏鸡的LD（50）为4985±753.18mg/kg体重。

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Mice were used to determine the safety limitation of solanine in term of the lethal dose 50% ( LD50) ( Expt. IV).

最后，利用小鼠试验测定了其毒性和半数致死量，探讨了其在饲料中的安全阈量。

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The Lethal Dose 50 test ( LD 50 ) may also be replaced.

药剂致死剂量50 ( LD50 ) 试验也可以被代替.

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Objective To measure the half lethal dose ( LD_ ( 50)) of paraquat in mice.

目的测定百草枯对小鼠的半数致死量（half lethal dose，LD50）。

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The death ratios were observed and the median lethal dose ( LD 50) was calculated.

观察10d动物的存活情况，计算昆明小鼠单宁经口半数致死量（LD50）。

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To observe the acute toxicity and death of the mice to which calcium nanoparticles were given in maximal dose and obtain the lethal dose 50 ( LD50) or the maximal tolerance dose ( MTD).

观察小鼠一日内给予大剂量钙纳米粒子的急性中毒及死亡情况，得出半数致死量（LD50）或最大耐受量（MTD）。

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Crawfishes ( Cambarus proclarkii) as animal were infected with white spot syndrome virus ( WSSV) for studying various infection characters, including temperature, transfer route, successive infection, median lethal dose ( LD 50), immunity against virus and virus conservation etc.

应用克氏原螯虾作为动物模型研究对虾白斑综合征病毒（WSSV）的感染增殖特性，涉及感染温度、感染途径、继发感染、半数致死量（LD50）、免疫保护及保存期等。

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METHODS The toxicity of cantharidin was expressed at lethal dose 50 and biochemical indexes, apparent pharmacokinetic parameters of cantharidin were determined by using acute mortality of mice.

方法用小鼠半数致死量（LD50）及生化指标的变化来表征斑蝥素的毒性，用小鼠急性死亡率法测定斑螫素药物动力学参数。

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A study on the lethal dose 50% of nitrile to mice

腈对小白鼠毒性大小（LD50）的研究

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The Lethal Dose 50 test ( LD50) may also be replaced.

致死计量50实验（LD50）也可以被代替。

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In the experiment, an avian H5N1 influenza A virus was isolated from chicken tissues infected. The 50% egg lethal dose ( ELD50) titer of this AIV is 10-7.67/ 0.lml.

本实验中，从病死鸡组织病料中分离到一株H5N1亚型AIV，鸡胚半数致死量（50%egg lethal dose，ELD（50））滴度为10~（-7.67）／0.1ml。

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Methods: Acute toxicity tests of median lethal dose ( LD_ ( 50)) were performed to test whether panax polysaccharide could reduce the toxicity and adverse effect of compound fluorouracil lipid.

方法：通过急性毒性实验半数致死量（LD50）的检测，验证人参多糖是否降低氟脲嘧啶多相脂质体的毒性。

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METHOD: We detected median lethal dose ( LD 50) of mixture of scopolamine ( SCO) and chlorpromazine ( CPZ) in the different dose to mice and rats by Bliss and Brownlee sequential trial.

方法：用Blis法和Brownle序贯法分别测定不同比例东莨菪碱与氯丙嗪组合成不同比例东氯合剂后对小鼠、大鼠的半数致死量（LD50）。

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