The lac operon is an inducible operon, whereas the trp operon is a repressible operon.

乳糖操纵元是可的操纵元；色氨酸操纵元是可阻遏的操纵元。

AIM To investigate the effect and mechanisms of tetramethylpyrazine on oxazolone induced colitis in mice.

目的探讨川芎嗪对口恶唑的小鼠实验性肠炎的影响及其机制。

AIM To investigate the effect and mechanisms of Kangfuxin on oxazolone induced colitis in mice.

目的研究康复新对恶唑的小鼠实验性肠炎的影响,并探讨其机制。

Antiestrogen. Selective protein kinase C (PKC) inhibitor. Induces apoptosis.

抗雌激素。选择性PKC抑制剂。凋亡。

Methods Procaine intravenous anesthesia was administered after ketamine basal anesthesia,pentothal sodium induction and intubation.

方法氯胺基础麻醉后,硫喷妥钠经口气管插管静脉普鲁卡因复合全麻。

In hot rolled state the granular linea sulfide was induced to precipitation of banded pseudopearlite.

相邻呈现断续条状分布的硫化物颗粒在热轧状态伪珠体析出并呈带状分布。

Callus was efficiently induced from in vitro root segment devoid of rhizodermis on MS medium.

结果表明，以离体去皮根段为外植体，MS为基本养基，愈伤组织较为适宜。

Only the dorsal lip of the blastopore could induce altered development in the host .

只有胚孔的背唇能够宿主发育的改变。

In the present paper, the results on induction of monohaploid plants from a pollen derived typical male sterile dihaploid strain of Solanum tuberosum L. were reported for the first time.

本文首次报道了用花药养法由一个典型的雄性不育的双单倍体品系产生一单倍体的试验结果。

It is concluded that for the first time the present study shows that plumbagin can inhibit cell proliferation, block cell cycle and induce apoptosis of APL cell line NB4 cells.

本研究首次证实白花丹醌能够抑制APL细胞系NB4的增殖、细胞凋亡及阻滞细胞周期进程。

Autoxidation of lipids is a chain raction of free radical.In the inducing stage,the inducers switching on free radical may be lipoxygenase or photoxidation,but the most is transitional metals.

脂类的自动化是一个自由基连锁反应，期中启动自由基的发剂可能是脂、化，但多数为过渡金属离子。

Quantum well intermixing induced by impurity diffusion has been used in fabricating nonabsorbing windows in the cavity facets to improve the output power of high-power laser diodes.

杂质扩散量子阱混杂技术可用于制作腔面非吸收窗口, 提高大功率半体激器的输出功率。

Cynosural Generator Arrays provide a permanent cynosural beacon available to everyone in your alliance, which can be the target of capital ship jumps or jump portal links.

力场发生器阵列为你的盟友提供一个永久有效的力场[灯塔？]，它可以作为主力舰（旗舰）跳跃或跳跃门的连接目标。

After partial deafferentation of spinal cord of adult cat, the expression of NGF in dorsal horn, which is the target area of dorsal root afferent fibers, up-regulated.

成年猫脊髓部分背根传入纤维损伤后，其背角靶区内NGF的表达又明显增加，可能是未受损伤的背根——备用背根纤维在脊髓内侧枝出芽的一个重要因素。

Under the selection pressure of crude toxin filtration, three kinds of treatment methods and four kinds of phytotoxin concentrations were used to screen the blast-resistant callus phenylalanine.

摘要以稻瘟病病原菌粗毒素提取液为选择压，对水稻进行抗病性筛选，结果表明：粗毒素提取液对水稻愈伤组织、继代及分化有明显的抑制作用，抑制程度随毒素浓度提高而增强，且品种间差异显著。

Gordon have demonstrated that mechanical loading of skeletal muscle will induce activation of FAC signaling, as determined by changes in the phosphorylation status of FAK or paxillin.

戈登已经表明，骨骼肌机械装载外交事务委员会活化信号，如在FAK的或桩蛋白磷酸化状态的变化决定的。

Increasing biaxiality of molecular shape, the system will form a para-biaxial nematic phase at higher temperature.Decreasing temperature, the system will continuously enter into normal biaxial phase.

增加分子的双轴性，可使系统在较高温度下出准双轴相，降低温度，系统连续地进入双轴相。

OBJECTIVE To observe the effects of fetal bovine serum (FBS) and artificial perilymph (APL) on the differentiation of neural stem cells from newborn fetal guinea pigs.

目的体外定向新生豚鼠海马神经干细胞分化为内耳毛细胞。

Apoptosis and the tolerance of plantlets of Acacia implexa treated in vitro with cold stress were studied by microphotographics and total DNA agarose gel electrophoresis.

摘要利用显微观察和DNA凝胶电泳等技术，研究在低温胁迫下灰木相思组苗细胞的凋亡和对低温环境的耐受性。

In this study, the yield of acetanilide and benzanilide synthesis and the rate of reaction were compared between the traditional heat method and microwave inducement.

对比研究了常规加热与微波下合成乙酰苯胺、苯甲酰苯胺的合成产率及反应速率。