نتایج جستجو برای: tdt
تعداد نتایج: 2244 فیلتر نتایج به سال:
Topic detection and tracking approaches monitor broadcast news in order to spot new, previously unreported events and to track the development of the previously spotted ones. The dynamical nature of the events makes the use of state-of-the-art methods difficult. We present a new topic definition that has potential to model evolving events. We also discuss incorporating ontologies into the simil...
Abstract A microarray detection method based on on-chip signal amplification using terminal deoxynucleotidyl transferase (TdT) was developed to visualize pathogenic genes. Cyclic olefin copolymer (COC) substrate for microarrays treated with oxygen plasma induce hydrophilic surface properties. The capture probe DNA immobilized the COC by UV irradiation. 3ʹ end of modified a phosphate group provi...
Objective: The aim of the study is to determine Extended-Spectrum β-Lactamases (ESBLs) by three different phenotypic methods Escherichia coli (E. coli) strains that isolated from various clinical samples. 
 Methods: A total 93 E. samples were hospitalized patients. Antibiotic susceptibility tests done automated system Phoenix 100 (Becton Dickinson, Sparks, MD, USA). ESBL production was tes...
We evaluated a newly developed solid-phase immunoassay (EIA) of terminal deoxynucleotidyl transferase (TdT, EC 2.7.7.3) and compared it with the enzymatic assay of TdT involving DNA polymerase. We assessed the precision, performance characteristics, and clinical efficacy of the EIA procedure, using 249 specimens of peripheral blood and bone marrow and 118 specimens of whole blood. On linear reg...
Adenoidal tissue (also known as nasopharyngeal tonsils) of 58% of humans in the pediatric age group contains immature T-lymphoid cells with the phenotype of thymocytes (TdT+, CD1abc+, cytoplasmic CD3+, coexpressing CD4 and CD8, lacking an Intraepithelial Lymphocyte-associated phenotype). The notable difference in comparison to palatine tonsils is the clustering in groups and sheets, comprising ...
The effect of time from diagnosis to treatment (TDT) on overall survival of patients with acute myeloid leukemia (AML) remains obscure. Furthermore, whether chemotherapy delay impacts overall survival (OS) of patients with a special molecular subtype has not been investigated. Here, we enrolled 364 cases of AML to assess the effect of TDT on OS by fractional polynomial regression in the context...
Terminal deoxynucleotidyl transferase activity in childhood and adult acute lymphoblastic leukaemia.
The measurement of terminal deoxynucleotidyl transferase (TDT) activity in leukaemic blasts of 26 cases of acute lymphoblastic leukaemia (ALL) (13 children less than 14 years, 13 adults greater than 14 years) demonstrated significantly greater activities of the enzyme on a proportion of the adults. The predominant cytological sub-type in the adult patients was L2 (FAB classification) whereas L1...
background: the fatal effect of ionizing radiation on cells depends on linear energy transfer (let) level. the distribution of ionizing radiation is sparse and homogeneous for low let radiations such as x or γ, but it is dense and concentrated for high let radiation such as heavy-ions radiation. material and methods: chinese hamster ovary cells (cho-k1) were exposed to 4 gy fe-ion 2000 kev/m. ...
We present our tracking system for the 1998 Topic Detection and Tracking project (TDT-2). This project addresses multiple sources of information in the form of both text and speech from newswire, radio and television news broadcast programs. Our tracking system is probability based and we successfully solve the problem of score normalization across topics with a simple but e ective solution. Te...
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