The second mechanism is a more gradual process of adaptive mutation, whereby the capability of the virus to bind to human cells increases during subsequent infections of humans.
第二种机制是一个渐进的适应性变异过程，在这一过程中，伴随人类受到感染，病毒与人体细胞相结合的能力增加了。
Each additional human case increases opportunities for the virus to improve its transmissibility, through either adaptive mutation or reassortment.
每增加一例人间病例增强了该病毒通过适应性突变或重组提高其可传播性的机会。
Scientists have discovered a group of people in Ecuador with a rare gene mutation that could reveal ways to extend the human life span.
科学家在一群厄瓜多尔人身上发现了一种罕见的基因突变，有望据此揭开长寿的谜底。
Bryan Sykes, a human genetics expert at Oxford University, called the birth "extraordinary" and said some unknown mutation was the most likely explanation.
牛津大学人类遗传学专家布赖恩·赛克斯表示，这个婴儿的出生是“非凡的”，并认为最有可能是基因出现了某种变异。
Adaptive mutation, expressed initially as small clusters of human cases with some evidence of human-to-human transmission, would probably give the world some time to take defensive action.
适应性变异最初表现为小群人发病，一些证据显示人际传播，这或许可给世界一些时间采取防御行动。
The result is a strain of mice with a mutation that mimics the one that occurs in human leukemia.
结果得到具有与发生在人类白血病中的突变相像的基因突变小鼠系。
"We already know that the over-expression or mutation of molecules known as NIK and TRAF3 in B cells is associated with human multiple myeloma," said Professor Mackay.
“我们已经知道，在B细胞过度表达或突变的NIK和TRAF3分子是与人类多发性骨髓瘤相关，”麦凯教授说。
Because the oncogenes had been artificially introduced into those cell lines, the researchers then tested their model in human lung cancer cells with the EGFR mutation.
上述试验是人工将癌基因导入肿瘤细胞株，另外的实验是在具有EGFR突变的肺癌肿瘤模型上进行。
The human species: Homo Sapiens, was created by genetic mutation using the available primates and supplementing this base stock with their own genetic material.
人类种族：现在智人，是基因操作的成果，运用灵长类的基因以及补充它们自身基因组成的缺陷。
To investigate the cellular responses to IGF1, researchers bathed isolated human cells in blood serum taken from Laron subjects and from relatives without the mutation.
探讨细胞对IGF1反应，研究人员在血清中培养了莱氏综合症和他们亲戚中没有突变正常的人类细胞。
Professor Bryan Sykes, head of Human Genetics at Oxford University, called the birth "extraordinary". The expert said some unknown mutation was the most likely explanation.
牛津大学人类遗传学教授布莱恩·赛克斯表示，这个女婴的出生真是“太不寻常”了。基因突变是一个可能的解释。(实习编辑：顾萍)。
Objective To analyze the genomic structure, phyletic evolution and mutation rules of human bocavirus.
目的对人类博卡病毒的基因组结构、系统进化以及突变规律进行分析。
However, Keith Cheng, leader of the research team, points out that the mutation is different in human and zebrafish genes.
浅肤色的欧洲人和金斑马鱼类似，也是因为产生黑色素的基因发生了变异，从而使皮肤中的色素减少。
This is the first evidence of direct mutation of AKT1 in human cancer tumors: it was discovered in clinical samples from cancer patients, yet has never been detected in cancer cell lines.
这是首次在人类肿瘤细胞中发现AKT1突变的直接证据，结果都是从临床样本中检测到的，而在肿瘤细胞株中尚未报道过此突变。
It is not factual or logical to deduce human evolution according to Neo-Darwinisms minority mutation.
按照小群突变的新达尔文主义来推断人类进化，既缺乏事实根据，也有悖于逻辑推理。
The mutation or abnormal expression of CHD gene is thought to be related to some human diseases.
CHD基因突变或表达异常与人类某些疾病有关。
Mutation of CPAP induces a neuro-developmental disorder named MCPH (autosomal recessive primary microcephaly) that causes a great reduction in brain growth in human.
CPAP的某些突变诱导神经发育紊乱疾病“常染色体隐性小脑畸形(MCPH)”导致人类大脑生长的严重缩小。
The combination accelerated the development of lung cancers that carried a mutation in the gene KRAS - a common feature of many human lung cancers.
结果发现两种物质的联合加速了肺癌的进展，肺癌中存在KRAS基因突变，即人类肺癌中一种常见的特征。
Experts believe that the monkey AIDS virus enters the human body after infection can produce in the process of mutation and evolution of a human AIDS.
专家认为，这种猴艾滋病病毒进入人体后感染的过程中可产生突变，进化成为人类的艾滋病。
We can find its deletion and mutation in several kinds of human turners.
在多种人类肿瘤中，均发现其缺失和突变。
Gene mutation makes human cells no longer produce normal CCR5 protein, HIV virus so it can not enter the human cell carrier.
基因突变使得人体细胞不再产生正常的CCR5蛋白质，HIV病毒因此也就没有了可以进入人体细胞的载体。
Objective To establish TK gene mutation assay using human lymphoblastoid cell line TK6 and to study the genotoxic mechanism of Vinblastine(VBL).
目的建立用人类淋巴母细胞TK 6检测纺锤体毒物——长春花碱的TK基因突变试验方法，同时探讨长春花碱的遗传毒性分子机理。
Objective To clone human ornithine decarboxylase antizyme (OAZ) mutation gene and express its recombinant protein.
目的构建人鸟氨酸脱羧酶抗酶(OAZ)突变基因，重组至原核表达载体中并表达出重组蛋白。
Conclusion the site specific point mutation system can modify human gene in vitro more accurately. It is useful in the setting up of animal models.
结论体外定点突变系统可以对基因进行精细的修饰，为建立更精确地模拟人类疾病的动物模型打下基础。
This study was to explore CHEK2 gene mutation in human breast cancer, and assess the value of assay of Tumor Specific Growth Factor (TSGF), CA15-3, CA125 and CEA in the diagnosis of breast cancer.
本研究探讨CHEK2基因突变与乳腺癌的关系。同时探讨恶性肿瘤特异性生长因子(TSGF)、CA15 - 3、CA125及CEA检测在乳腺癌诊断中的价值。
L161R had not been reported and was a novel mutation when referring to literatures and human genomic database home and abroad.
查阅国内外文献及人类基因突变数据库，L161 R未见报道，属新发现的突变。
Objective To investigate the mutation of Von Hippel-Ldau(VHL)tumor suppressor gene in peatients with primary sporadic human renal cell carcinoma(RCC).
目的探讨国人原发性散发性肾透明细胞癌中VHL抑癌基因突变及其意义。
HIV virus is the largest genetic variation in human pathogens, with a high reproduction, high mutation, the reorganization of the high.
HIV病毒是人类最大遗传变异的病原体，具高复制性，高突变性，高重组性。
The invention also relates to a human reforming gene mutation technique, adenovirus transition carrier removing GFP and homologous recombinant adenovirus carrier.
本发明还涉及人源化改造的基因突变技 术和去除GFP的腺病毒转移载体及去除GFP的同源重组腺病毒载体。
The invention also relates to a human reforming gene mutation technique, adenovirus transition carrier removing GFP and homologous recombinant adenovirus carrier.
本发明还涉及人源化改造的基因突变技 术和去除GFP的腺病毒转移载体及去除GFP的同源重组腺病毒载体。
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