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PepT1 expression is increased in colon cancer. A, expression of PepT1 and PAT1 in normal colon (N) and paired colon tumor (T) tissues from 18 patients (see Materials and Methods) assessed by reverse transcriptase-PCR and compared with GAPDH as a control. B, semiquantitative analysis of expression of PepT1 and PAT1 in normal and tumor tissues shown in A as a ratio to GAPDH expression. ***, p < 0.001; NS, p > 0.05.
