Fig 2B shows the presence of circulating tumor cells (CTCs, red) bound to GFP-labeled human endothelial cells (green) in the blood samples from mice bearing tumors with GFP-labeled EC-Bcl-2. Similarly, a significantly higher number of GFP positive EC-Bcl-2 cells were observed in the lungs of these animals (Fig 2D). Fig 2E shows a representative photograph highlighting the GFP-labelled EC-Bcl-2 cells along with the metastatic nodule in the lung. Here, BCL2 is linked to neoplasm.