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Mapping 250K/500K SNP assay

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NETAFFX <strong>SNP</strong> ANNOTATION<br />

chapter 7 | Analysis Workflow 193<br />

The NetAffx Analysis Center provides regularly updated<br />

information about the <strong>SNP</strong>s on the <strong>Mapping</strong> arrays. You can<br />

download the annotation data from the NetAffx Analysis Center and<br />

display it in the <strong>SNP</strong> table of the Dynamic Model <strong>Mapping</strong> Analysis<br />

window.<br />

To use the NetAffx annotation option for the first time:<br />

1. Download the NetAffx annotations you wish to display.<br />

2. Select the NetAffx annotations to display.<br />

The first time you open a new array type, you will be prompted to<br />

download current annotations from the NetAffx Analysis Center.<br />

Click “Yes” if you want to see these annotations.<br />

You should download updates frequently from the NetAffx Analysis<br />

Center to ensure that you have the most up-to-date information.<br />

The NetAffx annotation download functionality has been enhanced<br />

in GTYPE. Please note that due to the increased speed of download,<br />

a dialogue box representing download progress is no longer<br />

shown.<br />

You may need to initialize NetAffx Analysis Center access to obtain<br />

certain types of annotations to download annotations in the future.<br />

Detailed information for initializing the default settings, and<br />

downloading and selecting the annotations can be found in the<br />

“NetAffx Annotations” chapter in the GeneChip ® Genotyping<br />

Analysis Software User’s Guide.

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