Figure 3

BL2B95 cells stained with cell-tracker (green) and incubated on the CAM for 4 days. The cells form solid tumors. The tumor borders are less sharp than those of BL2 cells. CAM vessels are faintly visible. A) A great mass of tumor cells (asterisk) is seen adjacent to the solid tumor (T). Bar = 2,5 mm B) Higher magnification of A). Note tumor cells (arrows) that obviously migrate from the tumor. Bar = 150 μm. C) Numerous scattered lymphoma cells and clusters of lymphoma cells are present at some distance from the solid tumor (T). Bar = 300 μm. D) Note lymphoma cells (arrows) lining up along a CAM vessel. Bar = 150 μm.