نتایج جستجو برای: chromosome manipulation
تعداد نتایج: 181117 فیلتر نتایج به سال:
Recombineering technology in Escherichia coli enables targeting of linear donor DNA to circular recipient DNA using short shared homology sequences. In this work, we demonstrate that recombineering is also able to support recombination between a pair of linear DNA substrates (linear/linear recombineering) in vivo in E. coli. Linear DNA up to 100 kb is accurately modified and remains intact with...
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...
Background: Recurrent pregnancy loss is a form of infertility with at least three consecutive pregnancy losses or more. Y chromosome microdeletions are a class of most likely genetic factors that occur in a special zone of Y chromosome which is named azoospermia factor region. The purpose of this study was to analyze the presence of Y chromosome complete microdeletions in male partner of couple...
Background: Lymphocytes of Fanconi anemia (FA) show an increased sensitivity to the alkylating agents such as mitomycin C (MMC), but their responses to gamma-irradiation is controversial. The extent of DNA damage in leukocytes of FA patients following irradiation and MMC treatment was studied at cellular and single chromosome level. Methods: DNA damage induced by gamma-rays and MMC was measure...
Protein tyrosine phosphatases (PTPases) regulate the tyrosine phosphorylation of target proteins involved in several biological activities including cell proliferation and transformation. Protein tyrosine phosphatase E (PTPE) contains duplicated PTPase-like domains and a short extracellular region. Using the fluorescence in situ hybridization method, the gene encoding PTPE (locus symbol Ptpre...
Pregnant women experience extensive physiologic and structural changes during pregnancy that affect their daily functioning. The addition of osteopathic manipulative treatment (OMT) to the standard care of pregnant women has been hypothesized to enhance homeostasis and improve quality of life as the body adapts to these changes. Specifically, it has been postulated that OMT can ease pain in pre...
The use of osteopathic manipulative treatment (OMT) during pregnancy has a long tradition in osteopathic medicine. A retrospective study was designed to compare a group of women who received prenatal OMT with a matched group that did not receive prenatal OMT. The medical records of 160 women from four cities who received prenatal OMT were reviewed for the occurrence of meconium-stained amniotic...
تعداد کروموزوم های سوماتیک و کاریوتایپ در پنج گونه از onopordum از ایران مورد بررسی قرار گرفت. نتایج ما سطح دیپلویید ( 342n=) را در تمام گونه ها تایید نمود. کاریوتایپ برای گونه های o. leptolepis, o. heteracanthum وo. carduchorum برای اولین بار ارائه می شوند. علاوه بر آن اعداد کروموزومی برای گونه های o. armenum, o. carduchorumو o. acanthium برای اولین بار از ایران گزارش شده و تایید کننده گز...
مشاهدات کروموزومی 23 جمعیت متعلق به 11 گونه، 3 زیرگونه و 2 واریته گزارش می شود. گزارش کروموزومی برای 6 گونه جدید و برای 9 گونه دیگر یا تایید و یا تصحیح شده است. رفتار میوزی کروموزومها و فراوانی کیاسما برای اولین بار ارائه گردیده است.
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