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. 2012 Jan 19;7(1):e29059. doi: 10.1371/journal.pone.0029059

Figure 1. Principal component analysis of microarray gene expression profiles.

Figure 1

(A) Discovery microarray dataset: 222 normal, black; 42 colitis/IBD, green; 29 adenomas, blue; and 161 adenocarcinomas, red. (B) Validation microarray dataset: 30 normal, black; 19 adenomas, blue; and 19 adenocarcinomas, red.