نتایج جستجو برای: 23sr rrna
تعداد نتایج: 29427 فیلتر نتایج به سال:
سرطان معده جزء سرطان های بسیار شایع در کل دنیا می باشد و میزان مرگ و میر بر اثر این سرطان به ویژه در آسیا و کشورهای در حال توسعه بالا است . اگر چه فراوانی سرطان معده در کشورهای غربی به آرامی در حال کاهش است ، با این حال دومین علت شایع مرگ بر اثر سرطان می باشد . هلیکوباکترپیلوری دارای توزیع جهانی است و عامل اصلی در پیشرفت زخم پپتیک و سرطان معده می باشد. هلیکوباکترپیلوری دارای مارکر های ژنتیکی می...
North-South Trade-Related Technology Diffusion: Virtuous Growth Cycles in Latin America This paper examines the impact on TFP in Latin America and the Caribbean (LAC) and in other developing countries (DEV) of trade-related foreign R&D (NRD), education and governance. The measures of NRD are constructed based on industry-specific R&D in the North, North-South trade patterns, and input-output re...
Genetic location of a mutant of bacteriophage T4 deficient in the ability to induce endonuclease II.
Reciprocal three-factor crosses and the use of a partial revertant of a putative ribonucleotide reductase mutant of Escherichia coli B/5 as indicator have made it possible to map denA (deficient in endonuclease II) between nrd-11 (ribonucleotide reductase gene B) and amM69 (gene 63) on the bacteriophage T4 chromosome.
Many laboratory strains of Bacillus subtilis contain 9 rather than 10 rRNA operons due to deletions occurring within the rrnJ-rrnW or rrnI-rrnH-rrnG gene cluster. These operons are members of two sets of closely spaced clusters located in the cysA-aroI region. Analysis of rescued DNA from integrants with insertions into rrnG and rrnH indicated that these tandemly arranged operons allowed freque...
Acinetobacter baumannii, a strictly aerobic, non-fermentative, Gram-negative coccobacillary rod-shaped bacterium, is an opportunistic pathogen in humans. We recently isolated a multidrug-resistant A. baumannii strain KBN10P02143 from the pus sample drawn from a surgical patient in South Korea. We report the complete genome of this strain, which consists of 4,139,396 bp (G + C content, 39.08%) w...
Vera C. Terra1, Américo C. Sakamoto1, Hélio R Machado1 and Fulvio A. Scorza2 1Centro de Cirurgia de Epilepsia (CIREP). Departamento de Neurociências e Ciências do Comportamento. Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo. Ribeirão Preto, São Paulo, 2Disciplina de Neurologia Experimental. Universidade Federal de São Paulo, Escola Paulista de Medicina (UNIFESP/EPM), São Pa...
Ricin, the highly toxic, hemagglutinating protein of the castor bean, has always been of great interest to the chemist and the immunologist (l-4), partly because it, may readily be obta.ined in considerable quantities. Earlier methods of preparation were carried out before the development of modern physicochemical and immunochemical methods for characterizing proteins and data are therefore lac...
The short arms of five human acrocentric chromosomes contain ribosomal gene (rDNA) clusters where numerous mini-nucleoli arise at the exit of mitosis. These small nucleoli tend to coalesce into one or a few large nucleoli during interphase by unknown mechanisms. Here, we demonstrate that the N- and C-terminal domains of a nucleolar protein, hNopp140, bound respectively to alpha-satellite arrays...
BACKGROUND The present study assessed microbial contamination in Italian dental surgeries. METHODS An evaluation of water, air and surface microbial contamination in 102 dental units was carried out in eight Italian cities. RESULTS The findings showed water microbial contamination in all the dental surgeries; the proportion of water samples with microbial levels above those recommended decr...
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