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BLAST parameters


 Many of the BLAST parameters can be changed if the user so desires, such as the various thresholds, and the type of pairwise matrices used to find matches. For most purposes, the default settings work OK.

However, if you are interested in finding out more about possible changes which can be made, see the NCBI tutorial at http://www.ncbi.nlm.nih.gov/Education/BLASTinfo/information3.html

The screenshot at the left shows some of the parameters which can be changed.