CCR9 and neoplasm: Interestingly, the tumor cell infiltrates in the livers of MOLT4-GFP xenografts displayed a completely different pattern than the infiltrates in the livers of xenotransplants from the T-cell leukemia cell line Jurkat-GFP (selected for being CCR9-), as demonstrated by UV-stereomicroscopic imaging (Supplementary Figures 2A, B).