How were SNPs in Build 121 validated?
You can find this out for yourself. As an example of how to accomplish this, look in the second section of the page, called Submitter Records by RefSNP Cluster. Click on the words Validation Status (the heading of the third field of that section), and you will see a pop-up window containing the validation codes. You can also see the validation status code definitions on the dbSNP FTP site.
