Hello Maria,

This type of information can be found on the track's description page. 
To view this, open the assembly browser to the target database and click 
on the track name.

For hg19, the path would be:
1 - http://genome.ucsc.edu/
2 - Genome Browser
3 - Choose Clade = Mammal, Genome = Human, Assembly = Feb. 2009 
(GRCh37/hg19) and submit
4 - RefSeq Genes is in the third track grouping, Gene and Gene Predictions

I hope this information is helpful.  Please feel free to contact the
help mailing list again if you require further assistance.

Best regards,

Jen
UCSC Genome Browser Support

On 7/16/10 1:13 PM, Xin Ma wrote:
> Hi,
>
>      I am trying to use the refGene file on
> http://hgdownload.cse.ucsc.edu/goldenPath/hg19/multiz46way/alignments/,
> however I can't really find corresponding information about this file on how
> this file was created, which version of the gene annotation file it has used
> and what kind of filters, if any, have been applied when generating this
> file.
>     Please direct me to the right place if you know where I can find these
> information.
>
>    Thanks,
>    Maria
> _______________________________________________
> Genome maillist  -  [email protected]
> https://lists.soe.ucsc.edu/mailman/listinfo/genome
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