نتایج جستجو برای: background: major histocompatibility complex (mhc) comprises a group of genes

تعداد نتایج: 23367723  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده ادبیات و زبانهای خارجی 1393

abstract this quasi-experimental study was aimed at examining the impact of storyline complexity on the grammatical accuracy and complexity of advanced and intermediate efl learners. a total of 65 advanced and intermediate efl learners were selected from iran language institute (ili). an intact group including 35 intermediate participants and another intact group with 30 advanced participants ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان - دانشکده علوم انسانی 1389

abstract poor reading comprehension can result in failure in using references, benefiting from professional gatherings and resources, keeping up with the growing body of knowledge in the virtual world of the internet, and failing to achieve in efl programs. the purpose of the present quasi-experimental study was to explore the effects of background knowledge and previewing narrative and expos...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1390

monumental changes occurring on a daily basis have altered the world into a global village of expanding technology and shrinking geography in which preparing language learners for intercultural communication seems to be a sine qua non for modern language education. employing a cross-sectional design in its first phase, this study investigated the intercultural sensitivity and language proficien...

Journal: :molecular biology research communications 2014
béla a. marosi karen m. kiemnec-tyburczy ioan v. ghira tibor sos octavian popescu

immune genes of the major histocompatibility complex (mhc) are among the most polymorphic genes in the vertebrate genome. due to their polymorphic nature, they are often used to assess the adaptive genetic variability of natural populations. this study describes the first molecular characterization of 13 partial mhc class iib sequences from three european ranid frogs.  the utility of previously...

Immune genes of the major histocompatibility complex (MHC) are among the most polymorphic genes in the vertebrate genome. Due to their polymorphic nature, they are often used to assess the adaptive genetic variability of natural populations. This study describes the first molecular characterization of 13 partial MHC class IIB sequences from three European ranid frogs.  The utility of previously...

E. Hamedmonfared Gh. Nikbakht Brujeni, H. Mahmoudzadeh H. Rezaei M. Emam R. Talebnia Jahromi

Several studies have focused on polymorphisms of major histocompatibility complex (MHC) in sheep, Ovar-MHC. This molecule plays a pivotal role in antigen presentation for eliciting immune responses against invading pathogens. The best-characterized genetic control of disease resistance and immune response in animals is associated with MHC. Numerous molecular genetic investigations have been und...

Journal: :iranian journal of immunology 0
soheyla alyasin clinical immunology and allergy, allergy research center farhad abolnezhadian department of pediatrics, division of immunology and allergy, namazi hospital, shiraz university of medical sciences, shiraz maryam khoshkhui department of clinical immunology and allergy, mashhad university of medical science , mashhad, iran

major histocompatibility complex (mhc) class ii deficiency is a primary immunodeficiency disease characterized by abnormality of mhc class ii molecules surface expression on peripheral blood lymphocytes and monocytes. clinical manifestations include extreme susceptibility to viral, bacterial, and fungal infections but the immunodeficiency is not as severe as scid (severe combined immunodeficien...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم طبیعی 1391

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

Journal: :تحقیقات دامپزشکی 0
عاطفه اسماعیل نژاد گروه پاتوبیولوژی، دانشکده دامپزشکی دانشگاه شیراز، شیراز، ایران غلامرضا نیکبخت بروجنی گروه میکروبیولوژی و ایمونولوژی، دانشکده دامپزشکی دانشگاه تهران، تهران، ایران

background: indigenous chickens could serve as precious genetic resources that should be considered in conservation and breeding programs. the major histocompatibility complex (mhc) has a strong association to disease resistance/susceptibility, production and reproduction traits in chicken. therefore, identifying its polymorphism in populations under selective breeding could be used for selecti...

Journal: :تحقیقات دامپزشکی 0
محمد مهدی رنجبر گروه میکروبیولوژی و ایمونولوژی، دانشکده دامپزشکی دانشگاه تهران، تهران-ایران غلامرضا نیکبخت بروجنی گروه میکروبیولوژی و ایمونولوژی، دانشکده دامپزشکی دانشگاه تهران، تهران-ایران علیرضا قدردان مشهدی دانشکده دامپزشکی، دانشگاه شهید چمران اهواز، اهواز، ایران مهران دباغیان دانش آموخته دوره دکترای تخصصی ایمنی شناسی، دانشکده دامپزشکی دانشگاه تهران، تهران-ایران

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...

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