symbol指的是基因名称吗?The data have been log transformed already. The log transformed values generally fall into 0 ~ 14, whereas the original raw data could be as large as 10,000. For multiple probesets mapped to one gene, you can choose to average the values from these different probesets; or like most people do, choose the probesets with the largeset varation across all sample. Find "filter" dialogue from the menu (I can't remember clearly), and it will let you do the non-specific filtering including merging probesets mapped to the same gene. 查看更多
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