Authors: DeXing Hou Haruo Kishida Takanori Shimokawa Eiichi Soeda
Publish Date: 1994/12
Volume: 39, Issue: 4, Pages: 411-
Abstract
Thank you for visiting naturecom You are using a browser version with limited support for CSS To obtain the best experience we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer In the meantime to ensure continued support we are displaying the site without styles and JavaScriptA cosmid library of 3×105 clones has been constructed from a human x hamster hybrid cell line 153E9a3 which contains human chromosome 21 HC21 as the only human chromosome From 56500 clones of this library 229 HC21specific cosmids have been isolated by their hybridization to total human DNA and by their failure to hybridize to total Chinese hamster DNA The cosmids isolated were then characterized of these 28 cosmids 122 of those tested contained Not1 sites and 41 cosmids were localized on the eight subregions of HC21 by differential hybridization with AluPCR products obtained from a hybrid mapping panel The cosmids localized were further integrated into the existing contigs using the endspecific probes of the clone insert Therefore they provided useful anchor points for contig mapping and walking
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