نتایج جستجو برای: 1 ia
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سابقه و هدف: هدف از مطالعه حاضر، بررسی مقاومت به سطح بالای جنتامایسین و ژنهای کدکننده آنزیمهای تغییردهنده آمینوگلیکوزید در انتروکوکوس فکالیس و انتروکوکوس فیسیوم جداشده از عفونت زخم سوختگی بود. مواد و روشها: پس از شناسایی سویههای انتروکوکوس فکالیس و انتروکوکوس فیسیوم، آزمون حساسیت آنتیبیوتیکی انجام شد. بهمنظور شناسایی سویههای HLGR از دیسکهای جنتامایسین استفاده شد. آزمون PCR بهمنظور شناس...
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کیهانشناسی، شاخه ای از نجوم است که ساختار و تحول عالم را به صورت کلی مورد بررسی قرار می دهد. با ارائه ی نسبیت عام توسط آلبرت آینشتاین در سال 1916 میلادی، زمینه ی مساعد برای ارائه ی یک نظریه ی کیهانشناسی متقن و محکم بر پایه ی اصول فیزیکی فراهم گشت. با کشف انبساطِ عالم توسط ادوین هابل در سال 1929 و کشف پس زمینه یِ ریزموجِ کیهانی در سال 1965، کیهانشناسی وارد مرحله ی مشاهداتی نیز شد و نظریه و تجربه، پ...
The Ia (p23,3O) antigens are useful in determining the Bor T-cell origin of normal peripheral blood lymphocytes. However, exceptions to the preferential B-cell expression of Ia antigens exist, i.e., many plasma cells are Ia and T cells are rarely Ia . Therefore, we investigated Ia expression (assayed by direct immunofluorescence using heteroantisera) by cells isolated from 33 malignant lymphoma...
The B6.C-H-2bm12 mutant is described and evidence is presented for the mutational site occurring in the IA subregion. The mutant is of the gain and loss type as bm12 in equilibrium or formed from C57BL/6 grafts are rejected in 14-16 d. Mapping studies by the gene-complementation method using H-2 recombinant strains place the mutation in the K or IA regions of the H-2 complex and furthermore, th...
Soluble products from antigen stimulated Trypanosoma cruzi-immune spleen cells enhanced the expression of Ia antigens on proteose-peptone-elicited mouse peritoneal macrophages (M phi). Acquisition of Ia paralleled M phi activation, previously shown to be mediated by this same source of lymphokine (LK). Expression of Ia and four other plasma membrane antigens was monitored by quantitative bindin...
Family history of type 1 diabetes and autoantibodies to the islet antigens insulin (IAA), glutamate decarboxylase (GADA), and the protein tyrosine phosphatase-like protein IA-2 (IA-2A) are strong predictors of type 1 diabetes, but the rate of progression to diabetes in multiple islet autoantibody-positive relatives varies widely. We asked whether detailed characterization of islet autoantibodie...
introduction: invasive aspergillosis is a major cause of morbidity and mortality in hematologic malignant patients which have received intensive cytotoxic therapy or undergone blood and marrow transplantation (bmt). early clinical and radiological diagnosis of ia is almost impossible and so mortality is very high. the main purpose of our study was to assay the diagnostic value of serum galactom...
growing evidence suggests that serotonin plays an important role in learning and memory and all its receptors might be implicated in this process. the present study aimed at investigating and comparing the possible involvement of 5-ht 3 and 5-ht 4 receptor (r) agonists/antagonists upon consolidation of inhibitory avoidance memory in the pre-limbic (pl) area. bilateral intra-pl microinjections o...
Background and purpose: The aminoglycoside modifying enzymes (AMEs) and class 1 integrons in clinical isolates of pseudomonas aeruginosa are the major factors leading to rapid spread of antibiotic resistance. The aim of the present study was to investigate the frequency of aac(6)-IIa, ant(2'')-Ia, and class 1 integrons in clinical isolates of pseudomonas aeruginosa. Materials and methods: For ...
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