Furthermore, an analysis of the expression of CCR9 in a panel of tumor cell lines shows that some of them do not express CCR9, whereas others, including the colorectal carcinoma (KM12L4), the melanoma A375, the glioblastoma U87, the ovarian adenocarcinoma SKOV3, the lung carcinoma A549, the mammary adenocarcinoma MCF7 and the pancreas carcinoma AsPC-1 express CCR9 on their surface (Supplementary Figure 1). Here, CCR9 is linked to colorectal carcinoma.