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排序方式: 共有19条查询结果,搜索用时 15 毫秒
1.
Supercoiled DNA folded by non-histone proteins in cultured mammalian cells.   总被引:2,自引:0,他引:2  
T Ide  M Nakane  K Anzai  T Ando 《Nature》1975,258(5534):445-447
  相似文献   
2.
治病是北方少数民族萨满的主要职能之一。在信仰萨满教的民族中萨满往往充当民间医生的角色。萨满医术是一种精神医术和心灵医术。萨满主要是治心因性的精神疾病,其主要治疗手段也是一种心理治疗。在萨满医术中包含着现代精神医学中使用的一些治疗方法和治愈机制。萨满的精神医术之本质在于通过各种方式使患者的心理得到平衡,与此同时让患者振作起来,对自己的病情持乐观的态度,确立战胜病魔的信心。萨满精神医术就是一种典型的宗教性心理——生理调控术。对萨满医术,应从心理人类学、医学人类学、宗教人类学等多种角度进行研究,这样才能够得出比较全面而相对正确的结论。  相似文献   
3.
Non-volcanic tremor and low-frequency earthquake swarms   总被引:11,自引:0,他引:11  
Shelly DR  Beroza GC  Ide S 《Nature》2007,446(7133):305-307
Non-volcanic tremor is a weak, extended duration seismic signal observed episodically on some major faults, often in conjunction with slow slip events. Such tremor may hold the key to understanding fundamental processes at the deep roots of faults, and could signal times of accelerated slip and hence increased seismic hazard. The mechanism underlying the generation of tremor and its relationship to aseismic slip are, however, as yet unresolved. Here we demonstrate that tremor beneath Shikoku, Japan, can be explained as a swarm of small, low-frequency earthquakes, each of which occurs as shear faulting on the subduction-zone plate interface. This suggests that tremor and slow slip are different manifestations of a single process.  相似文献   
4.
Zusammenfassung Säure-Basen-Werte von Meerschweinchen (Cavia porcellus L.) wurden unter künstlicher Atmung bei normalem Druck und bei Druck von 19.2 Atm. gemessen und festgestellt, dass künstliche Atmung unter erhöhtem Druck normale Säure-Basen-Gleichgewichte gewährleistet, während die Säure-Basen-Werte normaler Tiere mit denjenigen der Literatur nicht übereinstimmten.  相似文献   
5.
A Small  L D Homer  R S Ide 《Experientia》1978,34(10):1315-1316
The stimulating effects of elevated medium pH and androgen on in vitro transport of p-aminohippurate and N-methylnicotinamide (NMN) were additive, although the androgenic effect was pH-dependent only in the case of NMN. The similarity of response of the 2 systems supports the idea of a common passive efflux pathway for organic anions and cations.  相似文献   
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7.
安哥拉山羊及其杂种羊DNA指纹图谱分析   总被引:4,自引:2,他引:2  
应用寡苷酸探针(CA/GATA/TCC)  相似文献   
8.
Ellis-van Creveld syndrome (EvC, MIM 225500) is an autosomal recessive skeletal dysplasia characterized by short limbs, short ribs, postaxial polydactyly and dysplastic nails and teeth. Congenital cardiac defects, most commonly a defect of primary atrial septation producing a common atrium, occur in 60% of affected individuals. The disease was mapped to chromosome 4p16 in nine Amish subpedigrees and single pedigrees from Mexico, Ecuador and Brazil. Weyers acrodental dysostosis (MIM 193530), an autosomal dominant disorder with a similar but milder phenotype, has been mapped in a single pedigree to an area including the EvC critical region. We have identified a new gene (EVC), encoding a 992-amino-acid protein, that is mutated in individuals with EvC. We identified a splice-donor change in an Amish pedigree and six truncating mutations and a single amino acid deletion in seven pedigrees. The heterozygous carriers of these mutations did not manifest features of EvC. We found two heterozygous missense mutations associated with a phenotype, one in a man with Weyers acrodental dysostosis and another in a father and his daughter, who both have the heart defect characteristic of EvC and polydactyly, but not short stature. We suggest that EvC and Weyers acrodental dysostosis are allelic conditions.  相似文献   
9.
安哥拉山羊及其杂种羊父权认定的DNA指纹图分析   总被引:4,自引:1,他引:3  
应用DNA指纹技术对安哥拉山羊作亲子鉴定,结果发现子代个体的DNA指纹图中,谱带均分别来自父亲和母亲,没有新带出现。父权概率为0.9889,表明(CA/GATA/TCC)5探针能有效地应用于安哥拉山羊及其杂种后代的遗传分析。  相似文献   
10.
Malignant transformation, driven by gain-of-function mutations in oncogenes and loss-of-function mutations in tumour suppressor genes, results in cell deregulation that is frequently associated with enhanced cellular stress (for example, oxidative, replicative, metabolic and proteotoxic stress, and DNA damage). Adaptation to this stress phenotype is required for cancer cells to survive, and consequently cancer cells may become dependent upon non-oncogenes that do not ordinarily perform such a vital function in normal cells. Thus, targeting these non-oncogene dependencies in the context of a transformed genotype may result in a synthetic lethal interaction and the selective death of cancer cells. Here we used a cell-based small-molecule screening and quantitative proteomics approach that resulted in the unbiased identification of a small molecule that selectively kills cancer cells but not normal cells. Piperlongumine increases the level of reactive oxygen species (ROS) and apoptotic cell death in both cancer cells and normal cells engineered to have a cancer genotype, irrespective of p53 status, but it has little effect on either rapidly or slowly dividing primary normal cells. Significant antitumour effects are observed in piperlongumine-treated mouse xenograft tumour models, with no apparent toxicity in normal mice. Moreover, piperlongumine potently inhibits the growth of spontaneously formed malignant breast tumours and their associated metastases in mice. Our results demonstrate the ability of a small molecule to induce apoptosis selectively in cells that have a cancer genotype, by targeting a non-oncogene co-dependency acquired through the expression of the cancer genotype in response to transformation-induced oxidative stress.  相似文献   
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