نتایج جستجو برای: chromosome study

تعداد نتایج: 4058431  

Journal: :middle east journal of cancer 0
abolfazl movafagh department of medical genetics, school of medicine, shahid beheshti university of medical sciences, tehran, iran mehrdad hashemi associate professor of molecular genetics, department of genetics, islamic azad university,tehran medical branch,tehran,iran mojtaba ghadiani department of internal medicine/oncology, taleghani hospital, shahid beheshti university of medical sciences, tehran, iran reza mirfakhraei department of medical genetics, school of medicine, shahid beheshti university of medical sciences, tehran, iran hossein darvish department of medical genetics, school of medicine, shahid beheshti university of medical sciences, tehran, iran davood zare abdollahi department of medical genetics, school of medicine, shahid beheshti university of medical sciences, tehran, iran

background : according to the literature, there are a number of chronic and acute myeloid leukemias with unique, complex chromosome translocations. this study aims to conduct a brief review of the incidence of complex chromosome translocations in myeloid leukemia and reports a case of myeloid leukemia with complex chromosome translocations. methods :we conducted a web-based search for all peer ...

Objective Approximately 15 percent of couples are infertile. The male factor is responsible for approximately 50% of the cases. One of the main genetic factors playing a role in male infertility is Y chromosomal microdeletion within the proximal long arm of the Y chromosome (Yq11), named azoospermia factor (AZF) region. Recent studies have also demonstrated that there is a potential connection ...

Journal: رستنیها 2013
Mohammad Reza Rahiminejad Nastaran Jalilian,

This study concerns diploid chromosome numbers and karyotype analysis of nine species belonging to four sections (Vicilla, Cracca, Variegata and Anatropostylia) of the subgenus Vicilla of the genus Vicia (Fabaceae). The chromosome numbers of Vicia alpestris subsp. hypoleuca, V. aucheri, V. ciceroideae, V. gariensis, V. iranica, V. koeieana, V. rechingeri, V. sojakii and V. venulosa are reported...

Journal: :journal of biomedical physics and engineering 0
z sanaeian pour shirazi a zamani s m j mortazavi f zakeri m dianatpur m a mosleh-shirazi

background: high-energy ionizing radiation is harmful and changes the genetic makeup of dna, which can lead to increased risk of cancer. thus, the exposure of radiation dose should be under control and limited. ionizing radiation might lead to some chromosome aberrations like dicentric. there is a strong relation between the frequency of dicentric chromosome in metaphase, and the received dose....

Alfredo Orrico, Ambra Cortesi Andrea Giansanti Chiara Pescucci Francesca Gerundino Giuseppina Marseglia Paola Piomboni Roberto Ponchietti

Chromosomal defects are relatively frequent in infertile men however, translocations between the Y chromosome and autosomes are rare and less than 40 cases of Y-autosome translocation have been reported. In particular, only three individuals has been described with a Y;21 translocation, up to now. We report on an additional case of an infertile man in whom a Y;21 translocation was associated wi...

Journal: :The Plant cell 2009
Fangpu Han Zhi Gao James A Birchler

Stable maize (Zea mays) chromosomes were recovered from an unstable dicentric containing large and small versions of the B chromosome centromere. In the stable chromosome, the smaller centromere had become inactivated. This inactive centromere can be inherited from one generation to the next attached to the active version and loses all known cytological and molecular properties of active centro...

Journal: :BMC Proceedings 2007
Zhaoxia Yu Daniel J Schaid

Haplotype association analysis based on arbitrarily chosen markers might lower statistical power because of the larger number of degrees of freedom caused by irrelevant makers.On the other hand, an exhaustive search for all possible combinations of markers for haplotype analysis is computationally expensive for genome-wide association analysis.To improve power, we applied our recently developed...

Journal: :international journal of hematology-oncology and stem cell research 0
mehrdad payandeh medical biology research center, kermanshah university of medical sciences, kermanshah, iran. farhad shaveisi zadeh department of medical genetics, faculty of medicine, shahid beheshti university of medical sciences and health services, tehran mohammad erfan zare medical biology research center, kermanshah university of medical sciences, kermanshah, iran; studen kamran mansouri medical biology research center, kermanshah university of medical sciences, kermanshah, iran; depart reza khodarahmi medical biology research center, kermanshah university of medical sciences, kermanshah, iran; depart saeed alimoradi paramedical faculty, kermanshah university of medical sciences, kermanshah, iran

introduction: the myeloproliferative neoplasms (mpns) are a heterogeneous group of diseases characterized by excessive production of blood cells by  hematopoietic precursors. typically, they include polycythemia vera (pv), essential thrombocythemia (et), idiopathic myelofibrosis(imf), and chronic myeloid leukemia (cml). philadelphia chromosome is the final diagnostic test for cml. recently, jak...

Journal: :Japanese journal of human genetics 1990

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