LD50是什么意思

用法例句

[Result] Ionic liquid Br caused the death of some mice,with the median lethal dose(LD50) after 24 h to female and male mice being 52.

[结果]离子液体[C8mim]Br引起了部分小鼠死亡,其对雌鼠的24 h半数致死剂量(LD50)为52。

We established intra-peritoneal injection models of toluene and observed ethology,nervous excitation and LD50.

方法昆明鼠随机分成6组,8 000mg/kg,4 000mg/kg,2 000mg/kg,1 000mg/kg,500 mg/kg等不同剂量甲苯小鼠腹腔注射制作急性中毒模型,生理盐水对照组,染毒后观察24h一般行为学改变和4d、6d、8d、10d、12d、14d运用程控自主活动箱检测神经兴奋性变化,运用寇氏法公式计算药物半数致死剂量LD50。

Methods:Acute toxicity was carried out in mice by oral and intravenous administration of sodium rosiglitazone and LD50 was calculated by Bliss method.

结果:小鼠尾静脉注射罗格列酮钠的半数致死剂量(LD50)值为619。

to 10 antibiotics: gentamicin,neomycin, ampicillin,kanamycin,cephalothin,streptomycin,G418,hygromycin Zeocin and chloramphenicol were investigated.

利用统计学的方法和原理,确定了G418、潮霉素、Zeocin和氯霉素在海水培养基和淡化10倍的培养基中对小球藻的半致死剂量和95%可信限。

Moreover,the higher dose,the higher death rate,and the Half Lethal Dosage(LD50)for the seedlings of 41 days was 150 Gy.

随着剂量的增高,死亡率增高,组培苗生长41d时的半致死剂量(LD50)为150Gy。

The result showed that the stronger was radicalization,the larger was restrained degree;the sensitivity of different varieties were different; the LD50 of adventitious buds was 30-40GY, the LD50 of the calli was 10-20GY.

5-6 5Gy剂量辐射处理红掌6个品种的不定芽和愈伤组织材料,并进行组培试验,结果表明辐射愈强,参试材料受抑制程度愈大;不同红掌品种对辐射的敏感性不同;初步看出60Co对不定芽半致死剂量为30-40Gy,对愈伤组织半致死剂量为10-20Gy。

It was concluded that semi-lethal dose of the Lespedeza formosa was 203.

结果表明:种子生活力随辐照的剂量增加而降低;高剂量(300Gy以上)对幼苗的生长有显著的抑制作用;幼苗存活率与辐照的剂量呈显著负相关;美丽胡枝子种子的半致死剂量为203。

median lethal dose for callus;radiation treatment was done to callus induced bud differentiation by 7 different dosages as 5、10、15、20、25、30、40 Gy;radiation research was carried out for median lethal dose of callus induced bud differentiation of different breeds of salvia miltior

其次,以丹参不同品系叶片诱导的愈伤组织为材料,利用5、10、15、20、25、30、40、60、80、100 Gy十个剂量的~(60)Co-γ射线对愈伤组织进行辐射处理,研究了辐射后丹参不同品系愈伤组织的生长及生理指标的变化,并筛选出丹参三个品系愈伤组织的最佳辐射剂量,即半致死剂量;用5、10、15、20、25、30、40 Gy七个不同剂量~(60)Co-γ射线对愈伤组织诱导芽分化进行辐射处理,研究了辐射对丹参不同品系愈伤组织诱导芽分化的半致死剂量及生理指标的变化,研究结果表明:1丹参三个品系愈伤组织的诱导及芽分化诱导最适培养基分别为:愈伤组织诱导:品系99-2添加2,4-D 2。

The results of the acute toxicity experiment showed that:LD_(50) of Amanita fuliginea in mice is 112.

具体研究结果如下:1急性毒性实验研究结果表明:灰花纹鹅膏菌对小鼠的半致死剂量为112。

Sensitivity of Floribunda Roses to 60Co-γradiation and their medial lethal doses in radiation breeding

丰花月季组培苗对~(60)Co-γ射线辐射敏感性及半致死剂量的研究

Sensitivity of Jatropha curcas seeds to ~(60)Co-γ radiation and their medial lethal doses in radiation breeding

小油桐种子的~(60)Co-γ射线辐射敏感性及半致死剂量的研究

The medial lethal doses(LD50) of 6 Euphorbia pulcherrima cultivars were from 21.

结果表明:辐照使一品红植株的生长受到抑制,并且剂量越高抑制效应越明显;植株的存活率、株高、叶长、叶宽、叶面积均与辐照剂量呈显著负相关;不同一品红品种的辐照敏感性存在差异,其半致死剂量为21。

Sensitivity of Floribunda Roses to 60Co-γradiation and their medial lethal doses in radiation breeding

丰花月季组培苗对~(60)Co-γ射线辐射敏感性及半致死剂量的研究

A Study of Median Lethal Dose(LD_(50)) of Doxorubicin on Mice with Intraperitoneal Injection(i.p.)

阿霉素对昆明种小白鼠腹腔给药的半致死剂量研究

Sensitivity of Jatropha curcas seeds to ~(60)Co-γ radiation and their medial lethal doses in radiation breeding

小油桐种子的~(60)Co-γ射线辐射敏感性及半致死剂量的研究

The Lethal Dose50 test( LD50) may also be replaced.

药剂致死剂量50(D50)验也可以被代替。

lethal concentration(LC50)

半致死浓度（LC50）

He had no knowledge of what a fatal dose might be.

他不知道致死的剂量是多少。

Effects of Sublethal Doses of Insecticides on Predation of Multicolored Asian Ladybird Harmonia axyridis (Pallas) (Cole- optera: Coccinelliodae)

亚致死剂量杀虫剂对异色瓢虫捕食作用的影响

Establishing fat embolism rat model and determination of half lethal dose

大鼠脂肪栓塞模型的建立及半数致死量的测定

Effects of large dose steroid treatment during short-term on femoral head of chicken

短期应用大剂量激素导致鸡股骨头坏死

Effects of Larval Treatment with Low Lethal Insecticides on Chemical Communication Systems of Lepidopteran Moths;

低致死剂量杀虫剂处理幼虫后对成蛾化学通讯系统的影响

Effect of Sublethal Insecticide on Natural Enemies and Acetylcholinesterase Assay;

亚致死剂量杀虫剂对天敌的选择作用及ACHE的分析

Effects of Sublethal Dose of Spirodiclofen on the Population Parameters of Tetranychus cinnabarinus Boisduval

杀虫剂螨危的亚致死剂量对朱砂叶螨种群参数的影响

Effects of Acaricides at Sublethal Dose on Formation and Completion of Hypopi of Rhizoglyphus echinopus

亚致死剂量杀螨剂对刺足根螨休眠体形成与解除的影响

Life table parameters of imidacloprid resistant and susceptible populations of Nilaparvata lugens Stl(Homoptera:Delphacidae) under sublethal doses of insecticides

不同药剂亚致死剂量对褐飞虱不同种群生命表参数的影响

Effects of Different Insecticides Treated by Sub-lethal Doses on Growth and Development of Bemisia tabaci

不同杀虫剂亚致死剂量处理对烟粉虱生长发育的影响

The subcutaneous LD_(50) of sinomenine in mice was 535±41.9 mg/kg.

(6)青藤碱对小白鼠皮下注射的半数致死量为535±41.9毫克/公斤.

The Experimental Study on Anti-Inflammatory Effect of Scutellairin;

野黄芩甙抗炎作用的实验研究及半数致死量测定

Determination of Median Lethal Concentration Dose in Mice from Aconitum pendulum of Genuine Medicinal Materials in Ningxia

宁夏道地药材铁棒锤小鼠半数致死量(LD_(50))的测定