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The relative frequencies of synonymous and nonsynonymous nucleotide substitutions within the region were 2.92%±0.94% and 14.64%±2.67%, respectively.

分析认为，那些发生在多肽结合位点上的氨基酸错义替换与鸡MHCB-LBⅡ分子的免疫特异性有关。

The ratio between nonsynonymous and synonymous substitutions for CP gene is 0.092 which indicated the negative selective pressure for amino acid changes. No distinct correlation was found among isolates in different years or different isolates in one year in a

灰飞虱的RAPO聚类分析结果与病毒CP基因的系统发育分析结果具有一些相似性，初步暗示了RSV与灰飞虱很可能是共同进化的。

The ratio between nonsynonymous and synonymous substitutions for CP gene is 0.092 which indicated the negative selective pressure for amino acid changes. No distinct correlation was found among isolate s in different years or different isolates in one year in a

灰飞虱的 RAPO聚类分析结果与病毒CP基因的系统发育分析结果具有一些相似性，初步暗示了 RSV与灰飞虱很可能是共同进化的。

Methods Blood samples were obtained from 5 patients with AIDS, the C2~C3 region of HIV-1 envelope gene was amplified by nested polymerse chain reaction from plasma of each patient, and then subject to sequencing, clonal-quasispecies analysis, and the accumulation of synonymous and nonsynonymous substitutions as well as ds/dn ratios were calculated.

采用套式聚合酶链反应方法对5例艾滋病患者血浆HIV-1 env基因C2~V3区进行PCR扩增，产物经纯化后克隆至pMD-18T载体中，每例患者分别挑取5~8个克隆，共34株，完成阳性克隆的鉴定、抽提纯化和测序，将获得的DNA序列及核苷酸序列进行分析，并计算其核苷酸同源替换率与非同源替换率的比值。

Blood samples were obtained from 5 patients with AIDS, the C2~C3 region of HIV-1 envelope gene was amplified by nested polymerse chain reaction from plasma of each patient, and then subject to sequencing, clonal-quasispecies analysis, and the accumulation of synonymous and nonsynonymous substitutions as well as ds/dn ratios were calculated.

采用巢式PCR方法对5例艾滋病患者血浆HIV-1env基因C2~V3区进行PCR扩增，产物经纯化后克隆至pMD-18T载体中，每例患者分别挑取5~8个克隆，共34株，完成阳性克隆的鉴定、抽提纯化和测序，将获得的DNA序列及氨基酸序列进行分析，并计算其氨基酸同源替换率与非同源替换率的比值。

These results indicated that the genetic variation within exon 2 appeared to have largely arisen by gene recombination and balancing selection. Alignment of the deduced amino acid sequences of the β1 domain coded by exon 2 revealed 6 synonymous mutations and 27 nonsynonymous substitutions at the 33 disparate sites.

对B-LBⅡ等位基因第二外显子所编码的B-LBⅡ分子β1结构域氨基酸序列比对发现，31个B-LBⅡ新等位基因属于26个等位基因主型；在β1结构域氨基酸序列的33个变异位点上，存在6个同义替换和27个错义替换。

The estimated number of nucleotide substitutions per site between genera Phasianus and Chrysolopus is 0.076 (rangs from 0.067-0.085), and between golden and Ch...

在雉科系统发生中，雉属与锦鸡属是近缘的属；2。红腹锦鸡和白腹锦鸡的分化较晚，关系密切，可能只是两个亚种。

Results show that protons are liberated by dehydration or dehydroxylation after calcination at 500℃. These protons disrupt the silicon-oxygen-aluminium bridges where there are Al substitutions in the tetrahedral sheet of the montmorillonite. Some of silicon-oxygen and aluminum-oxygen tetrahedral invert to react with the pillaring agents and yield covalent bonds which firmly fix the pillars to the host clay. The Al-MMT are thermally and hydrothermally stable up to 700℃.

经过500℃高温焙烧后，交联剂经脱水或脱羟基释放出质子攻击蒙脱土四面体层中Si-O-Al四键，硅氧四面体和铝氧四面体发生翻转，与交联剂发生反应生成共价键，形成稳定的层柱黏土材料，在700℃高温下，Al-MMT材料不仅具有较好的热稳定性，而且具有较好的水热稳定性。

The Liturgy is said in Syriac with many Arabic substitutions in the lessons and proanaphoral prayers.

礼仪中，是说，在叙利亚文同许多阿拉伯语替换的教训和proanaphoral祈祷。

The results show thatthe substitutions containing sulfur atom in the pyrazole ring remarkably affectthe steric and electronic properties of the pyrazole ligands.

因此，我们研究了吡唑环上带上S原子取代基对形成双吡唑烷配体及其与VIB金属羰基配合物的光化学反应的影响。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。