نتایج جستجو برای: variable number of tandem repeats vntr

تعداد نتایج: 21198253  

2012
Bing Lu Ping Zhao Binbin Liu Haiyan Dong Qin Yu Xiuqin Zhao Kanglin Wan

BACKGROUND Tuberculosis is one of the most infectious diseases in the world. Molecular typing methods such as spoligotyping, and VNTR (variable number tandem repeats), IS6110 in the NTF region and LSP (large sequence polymorphisms) analysis are generally useful tools for the resolution of various issues related to the classical epidemiology of Mycobacterium tuberculosis (M. tuberculosis). MET...

Journal: :Biocell : official journal of the Sociedades Latinoamericanas de Microscopia Electronica ... et. al 2010
Valeria C Denninghoff Georgina P Ossani Ana M Uceda Maria A Avagnina Boris Elsner Alberto J Monserrat

Weanling Sprague-Dawley rats were fed on a choline-deficient diet with hydrogenated vegetable oil and corn oil as lipids develop acute renal failure. Pathogenesis of the latter is controversial and an ischemic mechanism has been proposed. Arachidonic acid derivatives are involved in the regulation of vascular tonus. Vasospasm could be due to an increase in tromboxane A2-mediated vasoconstrictio...

Journal: :Eastern Mediterranean health journal = La revue de sante de la Mediterranee orientale = al-Majallah al-sihhiyah li-sharq al-mutawassit 2008
S M Hosseini-Mazinani J Koochmeshgi Z Khazaee-Koohpar N Hosein-Pur-Nobari S M Seifati

This study of Iranian families assessed the usefulness of carrier detection of phenylketonuria by variable number tandem-repeat (VNTR) polymorphism analysis. We studied 171 people (45 unrelated PKU subjects, and their parents and unaffected siblings). Of 342 chromosomes (131 non-PKU and 211 PKU), 5 VNTR alleles were identified. This VNTR system would yield a polymorphism information content of ...

2012
Yih-Yuan Chen Jia-Ru Chang Wei-Feng Huang Shu-Chen Kuo Ih-Jen Su Jun-Ren Sun Tzong-Shi Chiueh Tsi-Shu Huang Yao-Shen Chen Horng-Yunn Dou

The Mycobacterium tuberculosis (MTB) Beijing strain is highly virulent, drug resistant, and endemic over Asia. To explore the genetic diversity of this family in several different regions of eastern Asia, 338 Beijing strains collected in Taiwan (Republic of China) were analyzed by mycobacterial interspersed repetitive unit-variable number tandem repeat (MIRU-VNTR) typing and compared with publi...

Journal: :Journal of clinical microbiology 2003
Anna C Noller M Catherine McEllistrem Antonio G F Pacheco David J Boxrud Lee H Harrison

Escherichia coli O157:H7 is a major cause of food-borne illness in the United States. Outbreak detection involves traditional epidemiological methods and routine molecular subtyping by pulsed-field gel electrophoresis (PFGE). PFGE is labor-intensive, and the results are difficult to analyze and not easily transferable between laboratories. Multilocus variable-number tandem repeat (VNTR) analysi...

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this study examined the effect of prior knowledge and vocabulary teaching on iranian efl learners listening comprehension. the current study has two purposes: one is to investigate the effect of background knowledge on the second language listening comprehension of iranian intermediates and the other is to determine whether second language is facilitated by the introduction of unknown vocabularies in the form of prelistening activities. to conduct the study different instruments such as listening proficiency test and four listening tests such as pre and posttests were used and various statistical processes and techniques including paired-sample t-test, and analysis of variance (anova) were used. the findings of this study supported all three hypotheses tested. differences were found between the means of preteaching vocabulary variable, the background knowledge activation variable, and mean difference between these two strategies variable. subjects scored higher when the unknown words were taught in advance. likewise, subjects scored higher when they were asked some relevant questions about the topic than on those without them. there was, in addition, a significant difference between the means of preteaching vocabulary strategy and background knowledge activation strategy. in fact, preteaching vocabulary had a better effect in enhancing the students’ listening comprehension, in comparison to background knowledge activation strategy.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1390

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...

Journal: :International journal of clinical and experimental pathology 2015
Jinghua Zhang Liang Zhao Peisheng Lv Guizhi Liu Weiguo Du Fan Yang Youyou Du Luosha Zhao

OBJECTIVE To study the relationship between human platelet alloantigens-2 (HPA-2) polymorphism, Kozak sequence polymorphism, macroglycopeptide region variable number of tandem repeats (VNTR) polymorphism of GPIbα and coronary heart disease (CHD). METHODS In the present study, blood obtained from 403 patients with CHD and 500 healthy controls was detected by PCR or PCR-RFLP methods to analyze ...

Journal: :Genetics and molecular research : GMR 2012
M B M Oliveira M P S Barros V M Silveira-Filho M R Araújo-Nepomuceno V Q Balbino N C Leal A M P Almeida T C Leal-Balbino

Plague outbreaks are occasionally reported in Brazil. Unfortunately, due to great genetic similarity, molecular subtyping of Yersinia pestis strains is difficult. Analysis of multiple-locus variable number of tandem repeats (VNTR), also known as MLVA, has been found to be a valuable tool to discriminate among strains. To check for genetic differences, strains obtained from two different ec...

2017
Nurzen Sezgin Abdullah Tekin Fatma Belgin Atac Hasibe Verdi Alpay Turan Sezgin

Background and aims The aim of this study was to explore potential associations of the intron 4 variable number of tandem repeats (VNTR) and E298A polymorphisms of the endothelial nitric oxide synthase (eNOS) gene with slow coronary flow (SCF). The association between plasma nitrate and nitrite (NO x ) concentrations and eNOS gene polymorphisms was also assessed. Materials and methods The int...

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