TCGA Agilent level 2 to level 3
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Entering edit mode
9 weeks ago
rebeliscu ▴ 30

Hi there,

I'm struggling to find documentation about how TCGA aggregated probe level data to gene level data (level 2 to level 3) for the Agilent microarray gene expression datasets (for GBM).

I'm asking because the values seem to have been log transformed (in level 2 and 3), but I'm not sure that I can un-log2 transform the aggregated level 3 data. I guess my question is, were they log2 transformed BEFORE aggregating, or after?

Thanks in advance.

TCGA • 84 views
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