نتایج جستجو برای: second exon of bula
تعداد نتایج: 21187492 فیلتر نتایج به سال:
background: major histocompatibility complex (mhc) comprises a group of genes, which plays a central role in immune response. the exon 2 of bula-drb3 is part of the mhc class ii in buffalo that highly polymorphic, found to be associated with resistance/susceptibility to infections and also with production parameters. objectives: the purpose of the present study is to identify bula-drb3 polymorp...
The DRB3 gene is a highly polymorphic major histocompatibility complex (MHC) class II gene and plays an important role in variability of immune responsiveness and disease resistance. In the present study, the MHC class II DRB3 gene in water buffalo (Bubalus bubalis) populations from Northwest regions of Iran was investigated through PCR-SSCP. Genomic DNA was extracted from whole blood samples c...
the drb3 gene is a highly polymorphic major histocompatibility complex (mhc) class ii gene and plays an important role in variability of immune responsiveness and disease resistance. in the present study, the mhc class ii drb3 gene in water buffalo (bubalus bubalis) populations from northwest regions of iran was investigated through pcr-sscp. genomic dna was extracted from whole blood samples c...
the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...
for several years, researchers in familiarity of efl teachers with post-method and its role in second and foreign language learners’ productions have pointed out that the opportunity to plan for a task generally develops language learners’ development (ellis, 2005). it is important to mention that the critical varies in language teaching was shown is the disappearances of the concept of method ...
attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...
since the 1960s the age effects on learning both first and second language have been explored by many linguists and applied linguists (e.g lennerberg, 1967; schachter, 1996; long, 1990) and the existence of critical period for language acquisition was found to be a common ground of all these studies. in spite of some common findings, some issues about the impacts of age on acquiring a second or...
a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...
this study investigated the effects of planning on second-language written production with regard to task type. the participants were 75 iranian learners of english as a foreign language attending a private foreign language institution. they were asked to complete two different types of writing tasks (expository writing task and argumentative writing task) in different planned conditions (indiv...
dynamic assessment according to vygotskys sociocultural theory, states that instruction and assessment are interrelated. using static forms of assessment with second and foreign language students could do more harm than good. many teachers neglect to take account of the complexity involved in learning a second or foreign language and often wonder why learning of a language take so long. thi...
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