Fig. 4. A stem cell niche for FL-SC.
(A and C) Tumour tissue sections from 7 days post-injection of GFP-tagged FLK-1 cells (A) or FLA-1 cells (C, CD38, green) and HK cells were stained with anti-hCD44 (red) for HK cells and anti-ABCG2 (purple) for FL-SC. (B and D) Tumour tissue sections from 4 weeks post-injection of FLK-1 (B) or FLA-1 (D) and HK cells were stained with CD31 (red) for mouse endothelial cells, ABCG2 (green) for FL-SC, and CD38 (purple) for lymphoma cells. DAPI (blue) was used as a nuclear counter-stain. Arrowheads show ABCG2+ lymphoma cells. The images were captured by a deconvoluting microscope using SlideBook software. Original magnification x400.



