Observe Single Leaf Asarum himalaicum's Acute Toxicity and Determination of its Median Lethal Dose

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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Median lethal dose of toxicity tests was larger than 10g/ kg.

毒理学试验的半致死量均大于10g/kg；

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The estimation of median lethal dose or effective dose by an ordinary curve fitting method

曲线配合法在测定半数致死量上面的应用

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A Convenient Method for Calculating the Median Lethal Dose in Toxicity Testing

毒力测定中致死中量的简便计算方法

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Computer program calculating median lethal dose of drugs

药物半数致死量的计算程序

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Median lethal time, mean lifespan and mean maximum lifespan of drosophila fed with different concentration of ponceau 4R were lower than those in control groups dominantly ( P < 0.05 or P < 0.01) in survival experiment, and a dose-response relationship was shown.

生存试验中各浓度组雌雄果蝇的半数死亡时间、平均寿命及平均最高寿命均较对照组缩短（P<0.05或P<0.01），且存在剂量-反应关系。

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The median lethal time ( LT50) of the GV was shortened with the increase of the virus concentration and the decrease of the larval instar, during which the GV was fed.

幼虫饲毒后，致死中时（LT（50））随病毒浓度提高而缩短；随饲毒时虫龄的增大而延长。

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The median lethal time ( LT_ ( 50)) of P_ ( f) NPV to the larvae was shortened with the increase of the viral concentration.

各测试浓度下致死中时间（LT（50）为3.43-5.14天，随病毒浓度提高而缩短。

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The most virulent strain was screened out after evaluated by the indices of mortality, infection rate and the median lethal time ( LT50).

以桃蚜的校正死亡率、感染率及致死中时（LT（50））为指标综合评价不同菌株毒力。

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Conclusion Nano-hydroxyapatite has no accumulative toxicity to rabbits, it is suggested that it is safe when the hydroxyapatite-sol was applied intravenously as a drug carrier in small dosage more less than the medium lethal dose, even as a kind of anticancer drug.

结论纳米HAP在家兔无明显蓄积毒性，提示当用量远远小于最小致死剂量时，纳米HAP可作为药物载体，甚至在将来可能作为一种新型的抗癌药物，经静脉安全应用。

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The oral acute toxicity test showed LD50 ( medium lethal dose)> 5.5 g/ Kg. Such result demonstrates that the synthesized product is nontoxic according to the classification of acute toxicity standard.

通过对合成的产物进行急性经口毒性试验，发现其经口半数致死量（LD50，medium lethal dose）大于5.5g/Kg，按照急性毒性分级标准确定该依布硒林衍生物属实际无毒级。

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The reasonable time of ultraviolet radiation treatment to urediospores of Chinese wheat yellow rust race 29 ( CY29-3) is the time of 90% relative percentage of lethality of urediospores. The 88.97% relative percentage of lethality of urediospore was gotten after 8 minutes ultraviolet radiation treatment.

以夏孢子相对致死率90%左右作为紫外线处理最适时间，发现8min为小麦条锈菌条中29号单孢菌系（CY29-3）最适处理时间，其夏孢子相对致死率达88.97%。

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The ultra-structural changes of Monopterus albus liver cells were observed with transmission electron microscopy after sublethal exposure to Cu2+ and nonionic surfactant AE ( linear alkylethoxylate).

利用透射电镜研究了亚致死浓度的Cu2+或表面活性剂AE（脂肪醇聚氧乙烯醚）对黄鳝肝细胞结构的损伤作用。

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CONCLUSION: With the increase of HIFU irritation time, the survival rate of tumor cells presents the linear decrease tendency. And 1 000 W/ cm2 × 30 seconds is the minimum dose of bringing cells into complete dead and breaking them into debris.

结论：当高强度聚焦超声声强固定为1000W/cm2时，细胞存活率随高强度聚焦超声辐照时间延长呈直线下降，1000W/cm2×30s是能灭活肿瘤细胞且使之完全破碎的剂量。

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Conclusion: The minimum dose of active DNA to induce SLE-like syndrome was 10^ tg, and it predominantly evoked the humoral response.

结论：10腭活性DNA即可诱导小鼠SLE样综合征，主要诱导自身体液免疫应答。

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The elaboratively-designed treatment plan is capable of having the tumor receive higher dose level while the normal tissues and organs receive minimum dose level.

结果表明，精心设计的治疗计划能使肿瘤区域接受到高的治疗剂量，而周围正常组织和器官接受的剂量最少。

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It was the better way to use the mid dose CF combined with the minimum dose 5 Fu in the treatment of advanced colonic cancer.

中剂量醛氢叶酸与小剂量氟脲嘧啶是治疗晚期肠癌的较好组合。

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The minimum dose of N. gonorrhoeae which can be detected by ELISA was 1 × 10 4 bacteria per ml.

淋球菌的最小检测量为1×104个／ml。

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Minimum dose of protection of recombinant pseudorabies virus ( rPRV-GP5) against pseudorabies in sheep

重组伪狂犬病毒（rPRV-GP5）对伪狂犬病最小免疫剂量的测定

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Objective To probe the minimum dose for trial diagnostic radiation of suspected intracranial germinoma.

目的探讨拟诊颅内生殖细胞瘤试验性放疗的最低剂量。

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