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Identification of genes affected in both U251 and U87 cells under i.c. versus s.c. growth conditions. sam was used to identify the genes in each cell line that were overexpressed (A) and underexpressed (B) in i.c. tumors as compared with their respective s.c. tumors in SCID mice. Genes exclusive to U251 cells (Left) and genes exclusive to U87 cells (Right) are shown. The overlapping center portions indicate genes common to both cell lines.
