Hi Jun.

Comments below.

On 28/02/2009, at 3:29 AM, Jun wrote:

> Hi,
>
> I try to get help on finding annotation for the cluster id shown in
> the cdf files.
> For the human exon array, I saw the latest transcript cluster
> annotation (.csv) dated as 11/24/08 at the Affymetrix website. The CDF
> file I am using is from here and dated as Nov 2007 (core.R3). I
> couldn't find either old transcript annotation or the newer cdf files.
> Could anyboby give me a direction? Thanks.

You will notice that in the "Archived NetAffx Annotation Files"  
section of:

http://www.affymetrix.com/products_services/arrays/specific/exon.affx#1_4

... you can find the older NetAffx files you need.

I did try and do an update last year sometime (July or so) and I  
noticed that for the Human Exon array, none of the probesets had  
changed in configuration, so I could've created a new CDF, but it  
would be identical to the old one.  Most of the changes in the NetAffx  
CSV file were to do with other annotation, such as GO terms and so on.

When I get a free moment, I will have a look at the latest probeset  
CSVs and see whether the probesets have in fact changed.  If so, I'll  
create a new CDF.

Either way, you should be ok by using a newer NetAffx annotation CSV  
with the older CDF.

Hope that helps.

Cheers,
Mark




------------------------------
Mark Robinson
Epigenetics Laboratory, Garvan
Bioinformatics Division, WEHI
e: [email protected]
e: [email protected]
p: +61 (0)3 9345 2628
f: +61 (0)3 9347 0852
------------------------------





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