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INFORMATION FOR

Frequently Asked Questions

In this section, you will find some of the more frequently asked questions regarding sequencing reactions and data return. We hope this will be useful for day-to-day questions.

If you do not find the answer here, please browse our information pages or call 203-737-2566 or e-mail dnasequencing@yale.edu.


Why does my sequence file contain NNNN?

There is an insufficient level of termination products for the computer software to call bases. Click here for a detailed explanation of causes of "No analyzed data" results.