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RT-PCR analysis of gp-340 mRNA expression in different cell lines (a) and the levels of the gp-340 transcripts in the gastric epithelial cell line AGS and pulmonary epithelial cell line A549 (b). A transferrin receptor (TfR) specific product from the cDNAs of all the cells was used as an internal control. The results shown are representatives of three independent experiments.
