Results indicated that the lowest concentration of parathion tested (1μg/ml) was toxic, and there was no significant difference in cytotoxic effects between the three test systems.

實驗所用的最低濃度1μg/ml就對細胞表現(xiàn)出毒性效應老夫妻性交免费视频，并且毒性呈濃度依賴性。

The single and joint toxicity of perchloroethylene and 1, 4-dichlorobenze acting on grass carp was studied adopting the additive index method of the aquatic pollution-exposure experiment combined with joint effects of aquatic toxicology.

采用水生污染暴露試驗和水生毒理聯(lián)合效應相加指數(shù)法，研究了四氯乙烯和對二氯苯對草魚的單一毒性與聯(lián)合毒性。

Moreover, the cytotoxicity increased with the raising of concentration of piperine.

用胡椒堿處理24h后亚洲日韩精品不卡在线，對C6/36細胞的半數(shù)毒性濃度（IC50）為0.32mmol/L，且毒性作用強度隨著藥物濃度增加而增強久久久免费性交毛片。

To explore the difference of mutagenicity and acute toxicity between laundry detergent s and ponceau 4R in Misgurnus angullicaudatus,actute toxicity tests and micronuclei tests were studied.

采用急性毒性試驗和紅細胞微核測試法国产极品在线观看无码迅雷下载，研究洗衣粉與胭脂紅對泥鰍的急性及遺傳毒性的差異。

In vivo test, the acute toxicity test of animal experiment indicated that the toxicity of PYM-CH-NP is lower than that of PYM.

動物的急性毒性試驗表明插碰人人，PYM-CH-NP降低了PYM的急性毒性作用亚洲黄的全免费在线观看。

ResultsThe result indicated that viability of VMAT2CHO was decreased with an increase of concentrations of rotenone.

結果Rotenone對VMAT2CHO細胞有毒性作用，隨濃度增大www.综合久久，細胞存活率下降日韩欧美中文字幕免费第一页；Rotenone和DA對細胞有協(xié)同毒性作用。

Areca nut extract exerts cytotoxicity and genotoxicity to several types of cells. In every gram of Piper betel inflorescence contains a high concentration of 15.4 mg safrole. As a result, chewing BQ containing Piper betel inflorescence may result in high safrole (420 μM in saliva during chewing) exposure.

已知檳榔子水萃取液對多種型態(tài)細胞具有細胞毒性以及基因毒性亚洲鸥美国产毛片；而每公克荖花中含有約15.4 mg黃樟素，因此在嚼食荖花檳榔塊過程中激情小说视频，口腔將暴露於大量黃樟素中（唾液中可測得黃樟素濃度為420 μM）无码黄片二三区。

The short-term toxicity of both selenite and Nano-Se in mice was further compared in this study.

我們曾說明納米硒和亞硒酸鈉有相近的生物利用度，但是納米硒的急性毒性很低国产欧美日韩视频在线，本項研究進一步比較兩者的短期毒性日韩精品国内直播在线观看网站。

The principal purpose of this study is to set up the isolation methods for diphtheria toxin expressed by genes, to purify the toxin with complete biological activities, and to make researches on its toxicities. In the experiments, the target gene was inserted into the cloning vectors--pET22b, then the vectors were introduced into host cells -BL21(DE3). The expression of the toxin was induced by addition of IPTG. The expression products were purified by His-6 label affinity chromatography. Then the diphtheria toxin expressed was transferred to PVC membrane using semidry blotter to determine the amino acid sequence of N-terminal. The "nicked" diphtheria toxin linked by disulfide bond was gained by protease hydrolysis.

為建立重組基因表達白喉毒素的分離純化方法，制備出具有生物活性的蛋白質毒素日本一区二区精品好黄，構建了白喉毒素表達載體pET22b-DT中文全毛片免费播放，并轉入大腸桿菌BL21(DE3)中誘導表達，以融合表達的His-6作為標簽通過親和層析純化久久精品女人天堂A片；表達毒素經(jīng)蛋白酶酶切后中文日韩字幕一区二区三区，形成了以二硫鍵連接的與天然結構相同的帶"缺口"的白喉毒素，并測定白喉毒素對豚鼠的急性毒性和細胞毒性操欧美性爱。

The Chinese native medicine poisonous sexology domain does not have the unification until now the toxic graduation quota standard.

中藥毒性學領域至今無統(tǒng)一的毒性分級定量標準综合久久久久久。