All,

I had used the lumi package two years ago to analyze Illumina microarray
data. I saved the normalized file and have been working with that. I have
been asked by GEO to provide a file that has not been preprocessed fully.
However, perhaps because of minor changes, the resulting number of probes
excluded changes from what I had documented in the past (using the same
script).

It seems my path forward should be to use an older version of lumi (where
can I find this) and try and see if that gives me the same number as
before. How can I install this older version?

Thanks,

Juliet

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