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Identification of unique upregulated gene expression signatures for each crypt section by Venn analysis. (A) Comparisons were made between gene expression data for each crypt subsection. (B) Results from Venn analysis. The top Venn diagram shows that there is no crossover; none of the same genes were upregulated in both top and bottom. The bottom Venn diagram shows that a considerable number of genes are upregulated in the middle compared with both bottom and top.
