Hi all,

I would like to normalie a hgu133 data set with gcrma.
I have so 128 u133a and 128 u133b.

First I normalized u133a and u133b separately and then I compared the 100 common probes sets. 
But I noticed that 20% of this common probes are very different. 

So my question is how to normalize u133a and u133b together?
Is it possible with gcrma, and does it make sense?

Thanks a lot
Sincerely,

Sabrina

Sabrina Carpentier
Service Bioinformatique
Institut Curie - Bat. Trouillet Rossignol (4e étage)
26 rue d'Ulm - 75248 Paris Cedex 5 - FRANCE
Tel : +33 1 42 34 65 21 
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