نتایج جستجو برای: samples were cultured on pda medium from among 119 samples cultured
تعداد نتایج: 11965929 فیلتر نتایج به سال:
In spite of wide spread investigations performed,the biological effects of ultrasound waves,specially on DNA molecule has not been fully understood.since any alteration in DNA molecule can lead to chromosome abnormality,the study of clastogenic effects of ultrasound is important.in this study,the effect of 1MHz frequency continuous waves with the power of 0.5,1 and 1.5 watts on G human lymphocy...
using haploid technique in breeding of sugar beet as an allogamous plant will facilitate breeding efforts. in this method,a pure line with a desirable genotype can be achieved by unfertilized ovule culture. therefore ovule culture was done from populations with numbers: 27621, 27624, 27626 and 27629. young flowering stems were collected and ovules were isolated from the flower buds after steril...
objective: critical macromolecules such as dna maybe damaged by free radicals that are generated from the interaction of ionizing radiation with biological systems. melatonin and vitamin c have been shown to be direct free radical scavengers. the aim of this study was to investigate the in vivo/in vitro radioprotective effects of melatonin and vitamin c separately and combined against genotoxic...
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
2, 3, 7,8-Tetrachlorodibenzo-p-dioxin (TCDD) has adverse effects on reproduction, in part due to direct actions at the ovary. It is unclear whether effects are further mediated by glands that regulate ovarian function. We investigated whether effects of TCDD are mediated via the hypothalamic-pituitary axis. Hypothalamic and pituitary tissues were cultured in medium with and without TCDD. TCDD d...
This study has been carried out in order to identify the phytoplankton cysts from sediment of Lipar zone (southeast coast of Iran) based on morphology and phylogeny of germinated cell. The sediment samples were collected from three sations by Ekman grab with 225 cm2 collecting area in 2015. Unknown cysts with different morphology were cultured in the petridishei containing the F2 medium and kep...
building on previous studies on intellectual features and learners’ grammar learning, the present study aimed at investigating whether intelligence criterion had any impact on efl learners’ english grammar learning across two intelligence levels. in the current study, the participants were divided into two experimental and control groups by administration of raven i.q. test. this led to the for...
Background and purpose: Clostridium difficile is an obligate anaerobic, gram positive bacillus. The purpose of this study was to develop and optimize Loop-mediated Isothermal Amplification (LAMP) technique for assessing the prevalence of Clostridium difficile infection in the samples of watery diarrhea. Material and methods: This cross-sectional qualitative study was performed in 48 samples of...
Satureja bachtiarica L, an important medicinal plant from Lamiaceae family is valuable because of its medical compounds. Optimization of in vitro culture through callogenesis is proposed to be an alternative for vegetative propagation. In present study, an efficient protocol has been developed for callus induction of S. bachtiarica using different explants and concentrations of plant growth reg...
Introduction: Although nowadays the risk of transmission of bacterial pathogens through blood transfusion has been decreased, but there is the possibility of transmission of these factors by injection of these kind of products. The purpose of this survey was determination of contamination of platelet products with aerobic bacteria in Isfahan Blood Transfusion Center. Methods: In the spring a...
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