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CCR9 expression in PEATs from metastatic melanoma. CCR9 mRNA expression by melanoma metastases to the small intestine (A), and other visceral organs (B), assessed by qRT-PCR. Normal kidney tissue, negative control (103 in A). Normal duodenum tissue, positive control (104 in A). Blank spaces are negative results. MOLT 4 cell line used as a positive control (not shown: CCR9/GAPDH mRNA value, 3.5 × 10−3).
