نتایج جستجو برای: dna extraction
تعداد نتایج: 663961 فیلتر نتایج به سال:
سقط جنین گوسفندان از دیر باز یکی از بزرگترین مشکلات صنعت گوسفند داری نه تنها درکشور ما بلکه در اغلب کشورهای پرورش دهنده گوسفند بشمار می رود وهمه ساله باعث تحمیل خسارات سنگین اقتصادی بردامداران منطقه می گردد. کمپیلوباکتریوزکه در گذشته به ویبریوز معروف بوده، بعدازبروسلوز و لپتوسپیروز مهمترین عامل سقط جنین گوسفندان می باشد. زیرگونه های کمپیلوباکتر و بویژه کمپیلوباکترژژونای و فتوس بیشترین سقط جنین ...
Medicinal plants have high importance in medicine and pharmacogonosy because of their secondary metabolites. Essential oils, antioxidants and flavonoids are the major compounds of many medicinal plants. These compounds especially antioxidants can increase oxidation of DNA in response to wounds. Nowadays, progresses in biotechnology such as molecular markers were used for phylogenetic relationsh...
Medicinal plants have high importance in medicine and pharmacogonosy because of their secondary metabolites. Essential oils, antioxidants and flavonoids are the major compounds of many medicinal plants. These compounds especially antioxidants can increase oxidation of DNA in response to wounds. Nowadays, progresses in biotechnology such as molecular markers were used for phylogenetic relationsh...
نقطه شروع بسیاری از روشهای بیولوژی مولکولی، ضرورت جداسازی DNA با کیفیت عالی است. معمولا کیفیت DNA با عواملی از قبیل عدم آلودگی ناشی ازRNA ، پروتئین، لیپید و سایر ساختارهائی که برای آنزیمهای برشی و پلی مرازها مزاحمت ایجاد میکنند سنجیده میشود. معمولا DNA استخراج شده از بلوک های پارافین و بافتهای فیکس شده در فرمالین بخاطر اثرات تخریبی وارد شده بر DNA، از کی...
We describe a rapid, simple, and reliable procedure for routine isolation of Mycobacterium leprae DNA from slit-skin swab specimens. This one-step DNA extraction method is based on the utilization of ChelexR 100, a chelating ion exchange resin. Slit-skin swab specimens from seven untreated leprosy patients at Baba Baghi Leprosy Hospital in Iran were processed by this procedure. The polymer...
Background and Objective: Formalin-fixed paraffin-embedded tissues are a valuable source of DNA for molecular studies. We designed and optimized an efficient procedure for DNA extraction from formalin-fixed paraffin embedded tissues. Materials and Methods: Seventy three blocks of cervical paraffin-embedded tissues were investigated. DNA was extracted using 45 minutes boiling in alkaline sol...
background: soybean oil is one of the highly consumed vegetable oil worldwide. nowadays, usage of genetically modified (gm) soybean seeds for soybean oil production is constantly increasing. the recommended methods for gmo detection are based on analysis of residual dna in vegetable oil and highly processed food. however, the successful amplification of isolated dna depends on the efficiency of...
Background: One of the major aspects of traceability in food authenticity assessment is to explore practical methods to find the origin of food. Objective: The aim of the present study was to find a DNA based method for authentication and traceability of food, which are of great importance in health management. Methods: Four different DNA extraction methods were applied to obtain high pure DNA...
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