您要查找的是不是：
- pyr operon 嘧啶操纵子
- Objective To clone and express the Trp operon gene of E. 目的克隆并表达大肠杆菌色氨酸操纵子基因,提高其酶活性。
- When the second operon with OC mutation, it will continue to express. 当第二个操纵子带有OC突变时，它将持续表达。
- This is known as pyro-electricity, derived from the Greek word pyr, meaning fire. 意为火与热。
- Some Pyr Sheps came to North America in the 19th century accompanying flocks of imported sheep. 19世纪时，部分比利牛斯牧羊犬伴随着大批羊群一起进口到美国北部。
- On warmer days, the Pyr will become less active and will usually prefer to rest until it begins to cool down. 更热一点，他们就会变得不好动，一般会热衷于休息直到他们觉得凉快为止。
- The Pyr has a heavy, primarily white double coat, that consists of a soft undercoat combined with a thicker outer coat. 大白熊拥有双层被毛，即柔软的绒毛和厚密的外毛。
- On warm days, it is common for the Pyr to dig holes in order to lay in the cooler earth. 天气变热，大白熊通常会在清凉的地底下挖洞，待在里面。
- In this paper,the Monod lactose operon modelis described as a computer program by BASIC language. 本文用BASIC语言设计Monod操纵子数学模型的电子计算机程序。
- A strange noise coming from a nearby bush for example may cause the Pyr to jump back several inches out of range. 例如，如果附近灌木丛中发出非常怪异的噪音可能会让大白熊突然跳回几英里的范围内。
- The lac operon is an inducible operon, whereas the trp operon is a repressible operon. 乳糖操纵元是可诱导的操纵元；色氨酸操纵元是可阻遏的操纵元。
- Glucose blocks induction of the lac operon by utilizing a positive control mechanism. 葡萄糖通过正调控机制阻止乳糖操纵元的诱导。
- Using a modified random arbitrarily primed PCR approach, the operon encoding the Enterococcus faecal ... 用改进的随机随机引物PCR的方法，操纵子编码的肠球菌粪便 ...
- Consequently, if glucose is present in the medium, it is redundant to induce the lac operon. 因此，如果培养基中存在葡萄糖，诱导乳糖操纵元的打开就是多余的。
- Pyr Shep fanciers imported breeding stock in the 1970’s and 80’s, establishing the foundation for the breed in America today. 1970至1980年代比利牛斯牧羊犬爱好者进口了该犬种并在美国成立了该犬种的基金会。
- If the owners desire and the Pyr's desire conflict, it may take a small re-enforcement, such as a gentle pull on the leash. 如果主人的命令和他的意愿发生冲突，大白熊可能会做出小小的让步，比如轻轻的拉扯栓它的绳子。
- Operon is a unit of bacterial gene expression and regulation, including structural genes and cis-acting control elements in DNA recognized by regulator gene product(s). 控制某一代谢途径的相关基因,紧密连锁地排列在一起,受同一操纵子控制。
- A chromosomal segment of DNA that regulates the activity of the structural genes of an operon by interacting with a specific repressor. DNA中的染色体元素DNA中的染色体，它是通过与一特殊的约束因子相互作用而控制遗传子结构基因的行为
- The morning void urinary pyridinoline (Pyr), a new marker of bone resorption, was assayed with competitive EIA in patients with various endocrine diseases. 用竞争性酶免疫分析法（EIA）测定了内分泌疾病患者空腹晨尿中骨吸收新标志吡啶并啉（Pyr）的浓度。
- The agr system contains divergent transcription units driven by promoters P2 and P3. The P2 operon encodes AgrA, AgrB, AgrC, AgrD. P2操纵子编码AgrA、AgrB、AgrC、AgrD;
