رگزایی، یک فرایند پیچیده چند مرحله ای شامل تکثیر، مهاجرت و تمایز سلول های اندوتلیال، تشکیل میکروتوبول و جوانه-زنی انشعاب های مویرگی جدید، یک رویداد ضروری در رشد و متاستاز تومورها بوده و بنابراین جلوگیری از آن به عنوان یکی از مهمترین راهکارهای درمان سرطان مطرح است. اندواستاتین، قطعه انتهای کربوکسیل کلاژن xviii، یک مهارکننده درون زاد رگزایی است که رشد طیف وسیعی از تومورها را بدون سمیت و مقاومت دا...

هدف از این پژوهش بررسی ارزش غذایی گیاه پنیرباد (swithania coagulan) و تأثیر عصارهی آن بر فراسنجههای تخمیر شکمبهای به روش آزمایشگاهی بود. نمونه گیاه مورد نظر از منطقه ایرانشهر واقع در استان سیستان و بلوچستان جمع آوری شد. پس از جمع آوری نمونه های گیاهی (برگ و میوه) و آسیاب آن ها طبق روش های استاندارد، ترکیبات شیمیایی آن ها از جمله ماده خشک (dm)، ماده آلی (om)، پروتئین (cp)، چربی (ee)، خاکستر (ash...

abstract the following study, in the first place, attempted to examine the effect of less experienced teachers participation in experienced teachers classes on their own skills and teaching methodology, in the second place, attempted to find out the role of teachers training in students achievements. for this purpose, 21 efl teachers were selected according to available sampling in kish l...

within communicative, interactive, and learner-centered framework of language teaching and learning, students need to learn four skills of listening, speaking, reading, and writing for their educational success. but of all the language skills, reading enjoys a paramount significance in so many second or foreign language academic contexts. in spite of its importance, language learners still have...

this study was an attempt to investigate and compare the effect of lexical inferencing and concept mapping on developing vocabulary retention of iranian language learners. sixty homogeneous students from different intact classes who were being taught as intermediate learners in sokhan english institute participated in this study. they were in different classes. a teacher made test as a pre-test...

abstract tasks nowadays are at the center of attention in sla research. task types is one of the critical issues in this regard, their effectiveness and suitability to any particular context, their characteristics and the result they yield are among some of these issues. on the other hand, discourse markers (dms) have been very much investigated and their effectiveness in conveying the meaning...

چکیده کلیدواژه ها oct4b1، سلول های بنیادی جنینی ، موش تراریخت ، پرتوانی ، خودبازسازی oct4 یکی از فاکتورهای رونویسی خانواده pou، با نقش کلیدی در تنظیم حالت خودبازسازی و پرتوانی سلولی در سلول های بنیادی جنینی و سلول های سرطانی جنینی، به عنوان تنظیم کننده کلیدی و مارکر ویژه سلول های پرتوان در in vitro و in vivo شناخته شده است و بیان آن برای رشد و تکوین جنینی پستانداران ضروری است. oct4 انسانی د...

this study was an attempt to investigate the effect of teaching meta cognitive strategies on iranian intermediate efl students speaking proficiency. in this study the researcher has employed metacognitive strategies taken from brown (2000) to teach speaking strategies to number of participants. the participants were intermediate students of shokouh language institute; they were divided into an ...

this research was conducted to examine the effect of a concurrent training on rest level of leptin of plasma and some hormonal factors in non-athlete subjects. the research population included non-athlete men who didn’t participate in any organized sport activities. 30 men were chosen voluntarily among the above-mentioned population and were divided into 2 groups: experimental (15 subjects) an...