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Real-Time PCR Based Validation of Gene Expression Findings. To confirm the gene expression changes in biliary tract cancers identified on microarray analysis, selected genes were tested in tumor and control specimens by RT PCR and normalized to HRPT which is similarly expressed in tumors and normal biliary epithelia. Results are shown for (a) TYMS, (b) UBD, (c) STAT1, (d) SRD5A1, (e) CCNB2, (f) CDC2.
