نتایج جستجو برای: in vitro techniques
تعداد نتایج: 17035263 فیلتر نتایج به سال:
in a preliminary study carried out in a simple field laboratory in bandar-abbas, southern iran, five isolates of p. falciparum collected from the patients was cultured in rpmi 1640 medium with human serum in the tightly closed screw capped vials without any devised system for adjustment of co2 and o2 mixture. the same isolates were also cultured, simultaneously, in petri-dishes using jensen-tra...
abstract the current study set out to address the issue as to whether the implementation of portfolio assessment would give rise to iranian pre-intermediate efl learner autonomy. participants comprised 60 female in pre-intermediate level within the age range of 16-28.they were selected from among 90 language learners based on their scores on language proficiency test -key english test. then, t...
until now many studies have been done over recent decades throughout the world to show the right age to start english. in iran, research is still at an early stage in terms of evaluating teachers’ beliefs about teaching children english. the problem of at what age to start teaching english and how to teach english to elementary school children has not been solved neither in this country nor els...
سلول های بنیادی جنینی موشی ابزاری ارزشمند برای انجام مطالعات تمایز سلولی در شرایط in vitro هستند. تمایز سلولی فرایندی جدایی ناپذیر از رشد و نمو موجودات پرسلولی است. در این مطالعه نقش مسیر آپوپتوتیک میتوکندریایی و تغییرات سطح انرژی سلول در فرایند تمایز سلول های بنیادی موشی به کاردیومایوسیت و آپوپتوز بررسی شده است.
از آنجا که کیفیت جنین حاصل از بلوغ آزمایشگاهی تخمک (in vitro maturation) در مقایسه با جنین حاصل از تخمک بالغ شده در شرایط طبیعی بدن (in vivo maturation)، پایین تر از حد انتظار است، بهبود مطالعات مربوط به عوامل تنظیمی پتانسیل تکوین تخمک ضروری است. از طرف دیگر پیشگویی و بهبود شایستگی تکوین (developmental competency) تخمک دو مسئله اساسی در تکنیک های تولیدمثلی (assisted reproductive techniques) هست...
due to the number of new substances coming into use every year and the increasing amounts of chemicals, which are introduced into the environment, there is a high demand for a rapid, reliable and cost-effective method for detection of developmental toxicity. to meet this challenge various in vitro techniques have been established additional to in vivo animal testing. this review introduces the ...
the purpose of this study is identifying effective factors which make customers shop online in iran and investigating the importance of discovered factors in online customers’ decision. in the identifying phase, to discover the factors affecting online shopping behavior of customers in iran, the derived reference model summarizing antecedents of online shopping proposed by change et al. was us...
در پژوهش حاضر با بررسی عصاره های متانولی، هگزانی و پروتئینی تعدادی از گیاهان، به وجود پپتیدها و مواد آلی ضد میکروبی در برخی از آن ها پی برده شد. به منظور امکان سنجی معرفی مواد موٍثره ی موجود در این گیاهان آزمایشات سمیت سلولی و اثر بر روی دو سایتوکاین سیستم ایمنی بدن در مطالعلت in vitro انجام شد. خواص آنتی اکسیدانتی عصاره های گیاهی نیر به دو روش بررسی شد.
garlic, an antioxidant plant, can react with amino groups of proteins to form schiff bases. as diabetes leads to glycation of various proteins and this in turn has some effects on the structure of proteins and biochemical activity of them, the inhibition of this process seems very vital. for several years researchers in this field have done their best to recognize the antidiabetic compounds. th...
conclusions these results indicate that a. kellalensis extracts exert potent anti-rotaviral activity only after viral adsorption. the two extracts from a. kellalensis showed a good selectivity index. also these results suggest that extracts prepared from the flowers of a. kellalensis may be potential anti-rotaviral agents in vivo and be useful in veterinary medicine. background achillea kellale...
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