Here I choose david to do GO analysis, I have the file list of Differential Expression Genes named deg.txt. Other file is background genes(human), named bg.txt.
I tried many times by david's Functional Annotation Tool, on the page left I upload my deg.txt as gene list at Step 3: List Type then did Step 4. Then I upload bg.txt next as Background at Step 3: List Type, the website seems refreshed and not save deg.txt.
So how to upload my backgroud gene list after upload deg.txt? Thanks in advance!