Figure 2

Analysis of dCK PCR product of parental cells and PCI43-G4000, PK1-G4000, and KLM1-G4000, on agarose gel electrophoresis stained with ethidium bromide. The 5′-untranslated region and complete coding sequence of exons 1–7 of the human dCK gene were amplified. P: parental cells, G: gemcitabine resistant.