Dear all,

I am a rookie in microarray data analysis and I not familiar with illumina
software and the result format of beadstudio software. Now I got microarray
data, but I am not sure about the process they have done to these data.

1. Normalized data means they are preprocessed and normalized, if they are
log transformed?
2. If I want to zscore transform the normalized data, if I should do log
transformation first?
3. In addition, illumina microarray data is one channel data, but I donot
know what is the difference between one channel data and two channel data?

Thanks a lot!

Zhe

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