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Mapping 250K/500K SNP assay

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

Operator 2 Tasks<br />

1. Cover the septa on each array with a Tough-Spot (Figure 4.8).<br />

2. For every 4 arrays:<br />

A. Load the arrays into an oven tray evenly spaced.<br />

B. Immediately place the tray into the hybridization oven.<br />

Do not allow loaded arrays to sit at room temperature for more<br />

than approximately 1.5 minute. Ensure that the oven is<br />

balanced as the trays are loaded, and ensure that the trays are<br />

rotating at 60 rpm at all times.<br />

Because you are loading 4 arrays per tray, each hybridization<br />

oven will have a total of 32 arrays.<br />

Operators 1 and 2<br />

• Load no more than 32 arrays in one hybridization oven at a time.<br />

• All 96 samples should be loaded within 1 hour.<br />

• Store the remaining samples and any samples not yet hybridized in<br />

a tightly sealed plate at -20 °C.<br />

• Allow the arrays to rotate at 49 °C, 60 rpm for 16 to 18 hours.<br />

Allow the arrays to rotate in the hybridization ovens for 16 to 18<br />

hours at 49°C and 60 rpm. This temperature is optimized for this<br />

product, and should be stringently followed.

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