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Mapping 250K/500K SNP assay

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OUTPUT<br />

184 GeneChip ® <strong>Mapping</strong> <strong>500K</strong> Assay Manual<br />

Single File Analysis:<br />

1. In the Data Source window, browse to your .cel file of interest.<br />

Right-click that .cel file.<br />

2. Click Analyze and a .chp file of genotyping calls will be generated.<br />

Further information on the use of .chp files may be found below.<br />

3. Right-click on the generated .chp file in the Data Source window.<br />

4. Click Report to display the .rpt file summarizing data from that<br />

sample. This .rpt file is saved in the GCOS data directory.<br />

For customers interested in generating data using the new BRLMM<br />

algorithm for <strong>500K</strong> data, please refer to www.Affymetrix.com for<br />

detailed information and documentation on the BRLMM algorithm.<br />

Following analysis, .chp files are generated for each sample. The .chp<br />

files can be opened by double-clicking on the files in the GTYPE data<br />

file tree. Multiple .chp files can be opened simultaneously. Once<br />

opened the .chp files will display a Dynamic Model (DM) scatter plot<br />

in the upper portion of the window and a data table in the lower<br />

portion of the window as shown in Figure 7.3. In the data table a<br />

genotype call for each <strong>SNP</strong> along with a confidence score is displayed.

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