Figure 3From: Improved retroviral suicide gene transfer in colon cancer cell lines after cell synchronization with methotrexateDetection of HSV-TK protein. DHDK12 cells (A) and DHDK12 cells transduced with the HSV-tk retroviral vector (B) were immunostained for HSV-TK. Cells seeded on chamber were transduced with TG 9344. After 48 hr, cells were fixed with 4% paraformaldehyde and stained with a mouse monoclonal 4C8 antibody against HSV-TK protein.Back to article page