نتایج جستجو برای: sporadic region

تعداد نتایج: 557854  

Journal: :Cancer research 1997
P Cairns K Okami S Halachmi N Halachmi M Esteller J G Herman J Jen W B Isaacs G S Bova D Sidransky

Sporadic prostate carcinoma is the most common male cancer in the Western world, yet many of the major genetic events involved in the progression of this often fatal cancer remain to be elucidated. Numerous cytogenetic and allelotype studies have reported frequent loss of heterozygosity on chromosomal arm 10q in sporadic prostate cancer. Deletion mapping studies have unambiguously identified a ...

Journal: :AJNR. American journal of neuroradiology 2012
Y Wang H Shi

We report a case of DDL with an osteosarcomatous component affecting the right neck. CT showed a lipomatous region with thick septa, a low-attenuation high-water-content component, and a sporadic heterogeneous high-attenuation calcified area.

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 2008
Christine S Walsh Seishi Ogawa Daniel R Scoles Carl W Miller Norihiko Kawamata Steven A Narod H Phillip Koeffler Beth Y Karlan

PURPOSE The importance of the BRCA gene products in maintaining genomic stability led us to hypothesize that BRCA-associated and sporadic ovarian cancers would have distinctive genetic profiles despite similarities in histologic appearance. EXPERIMENTAL DESIGN A whole-genome copy number analysis of fresh, frozen, papillary serous ovarian cancer DNA was done using the Affymetrix 50K Xba Mappin...

ژورنال: پژوهش در پزشکی 2009
خاتمی*1،, فاطمه, زالی1, محمد رضا, سلطانی1،, معصومه, غیاثی1،, سمیه, محبی1،, سید رضا, منتظر حقیقی1،, مهدی,

Abstract Background: Sporadic colorectal cancer is the fourth most common cancer in Iran. The DNA repair protein O6-methylguanine-DNA methyltransferase (MGMT) is involved in the cellular defense against alkylating agents. Genetic alterations in the MGMT gene may impair the protein’s ability to remove alkyl groups from the O6-position of guanine, thereby raising the mutation rate and increasi...

1991
Steven A. Cummer Umran S. Inan

Radio remote sensing of the ionospheric E region can be difficult, particularly in the nighttime E region valley which lies between two regions of higher electron density. We show that extremely low frequency (ELF) electromagnetic waves launched from below penetrate this region because of their low attenuation and can be reflected from both the D region and the top of the E region valley. This ...

2000
Steven A. Cummer Umran S. Inan

Radio remote sensing of the ionospheric E region can be difficult, particularly in the nighttime E region valley which lies between two regions of higher electron density. We show that extremely low frequency (ELF) electromagnetic waves launched from below penetrate this region because of their low attenuation and can be reflected from both the D region and the top of the E region valley. This ...

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