The biggest change of LD50 occurred between the 3rd-5th generations.
LD50的最大变化发生在第3代和第5代之间。
RESULTS: We did not get LD50 to mouse and rat, and no chronic toxicity to rabbit skin.
结果：酸枣仁油对大小鼠均未测出LD50，家兔皮肤刺激实验未见急性毒性反应。
Farinaceous endosperm breed LD50 'efficiency of decomposition and utilization of storage substance is higher than keratin endosperm breed ND108.
粉质胚乳型玉米鲁单50对贮藏物质的分解利用效率高于角质型胚乳玉米农大108。
The percentage of cells at G2/M phase was increased with the increasing of MeHg, and the 1/50 LD50 group had significant difference compared with control group (P<0.05).
采用流式细胞术检测，G2/M期细胞百分数增加，1/50LD50染毒组时与对照组比较差异具有显著性（P<0.05）。
Methods:Using the method of intragastric administration, to observe the acute toxicity of the crude and processed products of Entada phaseoloides in mice and determine their LD50.
方法：采用灌胃给药的方式，观察榼藤子生品及不同炮制品对小鼠的急性毒性反应，并测定其LD50。
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）。
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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