نتایج جستجو برای: in vitro activities
تعداد نتایج: 17018806 فیلتر نتایج به سال:
two separate factorial experiments were conducted to study the effects of explant sources, plant growth regulators, sucrose concentrations, and light conditions on in vitro cormlet formation of freesia (freesia ×hybrida bailey 'argenta'). interestingly, it was observed that the pupae had lower contamination levels compared to mother corms. using 40% sodium hypochlorite solution for 40...
background: in vitro maturation (ivm) of oocytes is a promising technique to reduce the costs and avert the side-effects of gonadotropin stimulation for in vitro fertilization (ivf). the pregnancy rates from oocytes matured in vitro are much lower than those of in vivo stimulation cycles, indicating that optimization of ivm remains a challenge. objective: in this study, we investigated the effe...
background: repeated implantation failure (rif) is defined as pregnancy failure after two to six times with at least ten high grade embryo transfer to uterus. a variety of causes have been anticipated for rif, including anatomical, autoimmune, genetics, endocrine and thrombotic anomalies. factors responsible for rif have important implication regarding treatment however in many couples a perfec...
background: various approaches have been used in the attempts to improve the quality of frozen–thawed mouse sperms. according to literatures, it seems that hyaluronic acid (ha) has an important role on the permeability and motility of sperms and their interaction with gametes. objective: for evaluation of ha supplementation on sperm characteristics and fertilization capability, we investigated ...
abstract background autologus platelet gel is easy to prepare and is relatively low cost. the aim of this study was to prepare and evaluate in vitro efficacy of autologus platelet gel. materials and methods in this experimental study, platelet concentrate and platelet poor plasma were prepared with aphaeresis method. thrombin was prepared by mixing the plasma with calcium. thrombin activity lev...
آویشن (l. thymus vulgaris ) متعلق به تیره نعناع و یکی از مهم ترین گیاهان معطره و دارویی است. اثر شوری بر رشد گیاه در یک قرن اخیر، موضوع تحقیقات گسترده ای بوده است چرا که تنش شوری بهره وری گیاهان را در مناطق بیابانی و نیمه بیابانی محدود می کند. در این تحقیق، میزان مقاومت آویشن نسبت به تنش شوری به روش in vitro مورد بررسی قرار گرفت. جداکشت های محور زیرلپه و سرشاخه به دست آمده از دانه رست های سترون...
در این تحقیق، شیشه هایی بر اساس فرمول کلی 30cao–5mo–70sio2 (m=ca, sr, zn, mg) به روش سل-ژل تهیه شده و تشکیل لایه کلسیم فسفات بر روی سطح آن ها، که ضریب زیست فعالی را به وجود می آورد، توسط انجام آزمونin-vitro (غوطه ور سازی آن ها درون محلول sbf برای مدت زمان های متفاوت) مورد بررسی قرار گرفت. تشکیل لایه کلسیم فسفات بر روی سطح شیشه ها و تفاوت های ساختاری بین لایه تشکیل شده بر روی شیشه های مختلف، توس...
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