杀细胞的

All of experimental, we found the leave of Ampelopsis revipedunculata and Cayratia japonica have good effect of antioxidation and anti-breast cancer cell, Ampelopsis revipedunculata leave inhibit human breast cancer cell MCF-7 effect reach over 82%.

在全部实验方面，山葡萄及乌蘝莓的叶部位都具有很好的抗氧化能力及毒杀乳癌细胞株功效；山葡萄的叶在MCF-7细胞毒杀试验中的抑制率为82%。

The experiment was conducted to study the possible effects of toxicity in the toad erythrocyte s induced by dicofol,48 mature toads,Bufo gargarizans,were injected with five different dosages of DCF in coelom every 24 h and 1-4 times in succession,and cells producing micronucleus,nuclear abnormality and cell abnormality were counted separately.

用5种不同剂量的三氯杀螨醇(d icofo l，DCF)分别对48只中华蟾蜍成体进行体腔注射法染毒1~4次，观察并统计中华蟾蜍成体外周血红细胞产生微核、核异常及细胞异常的细胞数。

The reason is the tumor cells escape the immunosurveillance whose mechanism is very complex. In general, the explanation is based on two aspects, one is that the tumor cells can passively escape the host immunosurveillance when the host immnue state is low and another is tumor cells can actively secrete factors to down-regulate immune function.

肿瘤逃避免疫监视的机制非常复杂，但总体上可从宿主免疫状态及肿瘤细胞等方面来解释，在宿主免疫状态低下时，肿瘤细胞可以被动地逃避免疫监视，但是肿瘤细胞也能主动地释放一些活性物质，下调免疫杀瘤作用，该作用主要通过两个途径，即对免疫细胞功能的调节和免疫细胞数量的调节。

Methods Hep G2 cells were treated with Aroclor1254,DDT and Toxaphene respectively for 24 hours,and further incubated in the medium supplemented with cytochalasin B(3?μg/ml)for 24 hours.Micronucleiwere scored in 1?000 binucleated Hep G2 cells.

方法人肝肿瘤细胞Hep G2经Aroclor1254、毒杀芬和滴滴涕染毒24 h，继续在补充细胞松弛素B(3μg/ml)的培养液中培养24 h后，计数1 000个双核细胞中的微核。

In contrast to the wild strain, it improved the mosquitocidal toxicity,enlarged the mosquitocidal spectrum and provided a way to control the resistant mosquito.

另外，从苏云金杆菌野生株中克隆到一新的杀蚊毒素基因cyt2Ba7，其表达产物对昆虫细胞也具有溶细胞活性。

Through the mediation of Nodule Agrobacterium, the insecticidal protein gene from pseudomonas pseudoalcalgenes has been transformed into the receptor materials to develop a new transgenic forage grass with the character of grasshopper resistance.

类产碱假单胞菌杀虫蛋白基因在大肠杆菌中的表达由于大肠杆菌的启动子不能识别类产碱假单胞菌杀虫蛋白基因，因此ppip基因不能直接在大肠杆菌细胞中表达。

Department of Haemotology,Zhongda Hospital,Southeast University,Nanjing210009,China）Abstract:Cytokine induced killeris a new kind of immune cells which have non MHC restric-tion,highly proliferation and cytotoxicity.Their activities are superior to lymphokine activated killer cells.Immunotherapy of CIK cells can significantly improve clinical symptoms,but hardly have any side effects.

摘要］ 细胞因子诱导的杀伤细胞（cytokine induced killer，CIK）是一种非MHC限制性的新型免疫活性细胞，其增殖能力强、杀瘤活性高、副作用小，优于淋巴因子激活的杀伤细胞，对于提高患者自身抗肿瘤免疫能力有重要作用。

This protein has broad-spectrum insecticidal activities on Lepidoptera pests with the toxic activity of nanogram levels, which acts on brush border membrane vesicle in midgut epithelial cells of sensitive insects and eventually leads to the formation of ion channels.

VIP3A对鳞翅目害虫具广谱杀虫活性，可作用于敏感昆虫中肠上皮细胞刷状缘膜囊致离子通道的形成，杀虫活性达纳克级水平。

Mice randomized from each group were killed to get the spleens at Week 0, 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20 after last immunization, and the splenocytes were separated to measure CD4(superscript +) and CD8(superscript +) T cell subsets by FCM.

在末次免疫后0、2、4、6、8、10、12、14、16、18和20周各组随机剖杀4只小鼠，取脾，分离脾细胞，流式细胞仪检测脾CD4和CD8T淋巴细胞亚群的百分比。

HHD exerts some inhibitory-killing effect on living murine H22 cells, and its mechanism may be related to the increase of immune function and to the cytotoxic effect.

白花蛇舌草能一定程度抑杀小鼠活体腹水H22肝癌细胞，其机理可能与提高荷瘤小鼠的T细胞免疫功能及具有一定的细胞毒作用有关。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。