对数期

细胞鲜重（mFW）和细胞干重（mDW）则与细胞数目不同，没有明显的对数期，基本上呈逐步上升的状态；

Contrast to the cell number , fresh weight ( m FW ) and dry weight ( m DW ) had no apparent logarithmic phase , but a gradually rising tendency appeared .

对数期继代有利于细胞生物量的增殖和紫杉醇的含量的提高。

Subculturing on logarithmic phase was good to the accumulation of biomass and the synthesis of taxol .

菌体生长对数期末尾和稳定期，CLA生成活跃。

Production of CLA was active during the end of log phase and stationary phase .

应用0.8%甲醛灭活的猪链球菌2型9801全菌作为抗原，免疫BABL／C小鼠，待抗体水平达到1：100000时，取脾细胞并与对数期生长良好的SP2／0进行融合。

The BALB / C mice were immunized with the inactivated streptococcus suis type 2 by 0.8 % formaldehyde .

各种不同初始浓度下，细菌生长的停滞期不明显或很短，在3d内对BPA的降解能力较强。不同初始浓度下，细菌生长的对数期长短各不相同。

The lag phase of bacterial growth was unconspicuous or relatively short and the BPA was degraded rapidly in 3d after inoculation in each initial concentration .

5d内单歧藻的生长经历了停滞期、对数期、静止期3个阶段；

The growth of microalgae during the 5 d period underwent lag , exponential and stationary growth phases .

方法将蝎素以不同浓度分别加入对数期生长的人皮肤T淋巴瘤细胞Hut-78细胞中，通过MTT法、DNA凝胶电泳和FACS分析其抑制作用和诱导凋亡作用。

Methods After Hut-78 cells were treated with SVC ⅲ of different concentration , the inhibition and apoptosis of Hut-78 cells was determined by MTT , agarose gel electrophoresis of DNA fragment and FACS .

其D-核糖产量提高37%，菌体生长达到对数期的时间缩短3h，耐糖性比出发菌株提高了50%。

Its D-ribose production increased by 37 % , the period it reached to the logarithmic growth stage was shortened 3 hours , and its sugar-resistance increased by 50 % as compared with the starting strain .

由此看来，在对数期细胞中病毒的合成量明显高于平台期细胞的主要原因是最初吸附侵入到细胞内的BV粒子数量存在差异，而不是复制速度的不同。

Therefore , the major reason for higher amounts of viral DNA synthesized in exponential cells may due to the higher amounts of BV entered the cells rather than the difference of viral replication rate .

将培养至对数期中期的细胞离心收集并用含适量DTT、EDTA的TrisHCl缓冲液（pH75）洗涤，用Frenchpressurecellpress破碎，离心去除菌体碎片得无细胞抽提液。

Cells were harvested at mid_exponential phase by centrifugation and washed with Tris_HCl buffer containing DTT and EDTA ( pH 7 5 ) . The cells were then disrupted using a French pressure cell press and the supernatant was collected by centrifugation .

通过对细胞鲜重、干重和FDA染色活力检测，发现细胞生长在3-4天时处于对数期，此时的细胞最稳定、活性强可以用于进一步的实验。

Cell growth in 3-4 days in the log phase was found according to testing cell fresh weight , dry weight and vigor test of FDA staining , and during this phase cells grew very well , and were in the condition of stable and strong activity .

菌株ns-1在摇瓶条件下生长、色素积累的动态变化研究表明该株酵母色素积累起始于对数期末期和稳定期初期；

The courses of fermentation and optimum fermentation conditions were studied in the strain ns-1 . The pigments of strain ns-1 were accumulated at the end of exponential phase and the stationary phase .

实验证明，菌XD-1所产表面活性剂为脂肽类物质，菌在生长对数期产表面活性剂，表面活性剂的产生为生长相关型；

The experimental results indicated that the biosurfactants were Lipo-peptide compounds , strain XD-1 released biosurfactants in its logarithmic growth period , thus the mode of growth-correlativity of the strain XD-1 releasing biosurfactant was proposed .

对数期金黄色葡萄球菌的离子交换色谱行为及其表征

Ion-Exchange Chromatographic Behavior and Characterization of Staphylococcus aureus in Exponential Phase

表现为局限性增殖。麻风菌在裸鼠体内的生长对数期明显延长。

It is indicated that the phase of logarithmic growth was prolonged in nude mice .

高浓度尼古丁不仅使细菌生长对数期滞后，而且减缓了核苷酸的生物合成。

The higher nicotine concentration resulted in the delayed exponential phase of bacterial cells accompanied with retarded nucleotide biosynthesis .

在细菌生长过程中，组胺产生于对数期后期，积累于稳定期。

During the process of bacteria growth , histamine was appeared at the late logarithmic phase , and increased at stationary phase .

通过生长曲线，发现野生株在对数期的生长速率略高于缺失株和互补株。

In the growth curve , we found that wild type strain grows a little faster in exponential phase compared with deletion mutant and complementary strain .

结果表明：绿色微囊藻混合营养生长与光能自养生长相比，生长速率明显提高，对数期延长，生物量显著提高；

The results showed that by comparison , the mixotrophic growth rate was much higher than the photoautotrophic and the exponential phase elongated in the mixotrophic culture .

结果表明在细胞生长对数期继代比静止期继代细胞增长率提高1.6倍，而紫杉醇产量差异不大。

The results indicated that the growth rate of cells subcultured at exponential stage was1.6 times of that at stationary stage and there was no significant difference in the taxol content .

从对数期开始迅速产氢，并且一直持续到稳定前期，产氢速率达到16.8mL/h，生物气中最大氢含量为41%。

The rate of hydrogen production reached a maximum of 16.8 mL / h and the percentage of hydrogen gas in the headspace of serum bottle was up to 41 % .

在细胞生长的对数期加入稀土化合物能显著提高东北红豆杉细胞合成与释放紫杉醇的量；在加入稀土化合物的同时，补加碳源，有利于细胞合成紫杉醇。

Meanwhile , the addition of the rare earth compounds can strengthen the taxol biosynthesis and release of Taxus cuspidata cell suspension obviously , and also enhance the taxol biosynthesis with the addition of carbon source .

对数期和稳定期细胞膜脂中不饱和脂肪酸的组成随温度的上升而下降，这与从全细胞中抽提的磷脂的熔点密切相关。

The proportion of unsaturated fatty acids in the membrane lipids decreased with increasing growth temperature in both exponential_ and stationary_phase cell and correlated closely with the melting point of the phospholipids extracted from whole cells .

在细胞生长过程中，胞内钼铁蛋白两种聚合体的相对含量出现规律性变化：在对数期，细胞固氮酶比活力成上升趋势，而钼铁蛋白主要以高活力的四聚体形式存在；

The octamer formation in vivo is related to cell growth process . During the log-phase of cell growth , the specific activity of nitrogenase is increasing , and the tetramer is the major form of molybdenum-iron protein .

本文对红酵母色素的形成，细胞破碎及色素提取的方法和色素性质的分析作了初步研究，通过生长曲线的测定，发现色素产生主要集中在对数期的后期。

The formation of pigment from red yeast , cell rupturing , pigment extracting and analysis of pigment character were elementarily studied . Production of pigment mainly in the late exponential phase of growth was found by determination of growth curve .

结果表明，当发酵液中稀土浓度较高时，均能明显改变东北红豆杉细胞的生长模式，使细胞生长的延迟期与对数期缩短，平稳期消失，并于衰亡期出现生物量的周期性振荡；

The results showed that the growth pattern of Taxus cuspidata cell suspension culture were altered obviously by adding the rare earth compounds in the media , the lag and exponential phases of the cell growth shortened and the stationary phase almost disappeared , the biomass varied with time periodically .

悬浮液pH值的变化在对数生长期同生长曲线一致。

PH value of suspension cultural medium was in according with the calli growth curve .

通过不同生长阶段菌体的DNA提取结果，丝状真菌DNA的提取应选在其对数生长期为好。

The study , DNA extraction at different growth phase , shows extraction of filamentous fungi DNA should be at logarithmic phase .

MTT法于对数生长期筛选丹酚酸B的有效浓度；

Then , by using MTT assay , select the drugs efficacious concentrations in logarithmic growth phases of cell .

培养2h即进入对数生长期，8h后进入菌体衰亡期，没有明显的稳定期；

After 2 hours culture , the bacterium get a post exponential growth phase .