Figure 6From: Specific tumor-stroma interactions of EBV-positive Burkitt's lymphoma cells in the chick chorioallantoic membraneSemi-thin sections of BL2 tumors. A) Tumor cells were applied on the CAM within Matrigel, which is still visible after 7 days as amorphous material (M). Ch, chorionic epithelium; Al, allantoic epithelium. Insert: Higher magnification of lymphoma cells in Matrigel. Note the large nuclei with one or several nucleoli. Bar = 120 μm. B) Higher magnification of A) showing tumor cells in Matrigel (M). Tumor cells have invaded the CAM stroma (St). Blood vessels (arrows); Mitotic figures of lymphoma cells (arrowheads). Bar = 30 μm.Back to article page