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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Preimplantation genetic haplotyping ： ウィキペディア英語版 Preimplantation genetic haplotyping Preimplantation genetic haplotyping (PGH) is a clinical method of preimplantation genetic diagnosis (PGD). It identifies a haplotype of genetic markers that have statistical associations to a target disease rather than identifying the mutation causing the disease. == Advantages == Once a panel of associated genetic markers have been established for a particular disease it can be used for all carriers of that disease.〔 In contrast, since even a monogenic disease can be caused by many different mutations within the affected gene, conventional PGD methods based on finding a specific mutation would require mutation-specific tests. Thus, PGH widens the availability of PGD to cases where mutation-specific tests are unavailable. PGH also has an advantage over fluorescence in situ hybridization (FISH) in that FISH is not usually able to make the differentiation between embryos that possess the balanced form of a chromosomal translocation and those carrying the homologous normal chromosomes. This inability can be seriously harmful to the diagnosis made. PGH can make the distinction that FISH often cannot. PGH does this by using polymorphic markers that are better suited at recognizing translocations. These polymorphic markers are able to distinguish between embryos that carried normal, balanced, and unbalanced translocations. FISH also requires more cell fixation for analysis whereas PGH requires only transfer of cells into polymerase chain reaction tubes. The cell transfer is a simpler method and leaves less room for analysis failure.〔Shamash, J. et al. (2011). Preimplantation genetic haplotyping a new application for diagnosis of translocation carrier’s embryos – preliminary observations of two robertsonian trans-location carrier families. Journal of Assisted Reproduction and Genetics, 28(1), 77-83.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Preimplantation genetic haplotyping」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.