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Axin-2, Lef-1, Dll-3, Dll-4, Wnt-1, and Wnt-4 mRNA expression levels in normal human breast tissue (n = 9 or 6) and breast carcinoma samples (n = 34 or 14) quantified by real-time RT-PCR. All samples were run in triplicate and normalized to 18S rRNA. To account for tumor-to-tumor variability in gene expression levels, each bar represents a single tumor. Asterisks indicate medullary carcinomas.
