Relative abundance of MPL mRNA expression determined by qRT-PCR in normal (red bars) and tumor (blue bars) samples. Abundance is normalized to GAPDH, β-actin, and cyclophilin. The dashed line represents the mean of the normal samples. The gray box represents relative abundance below the level of accurate detection (abundance < 50). (A). Breast. (B). Lung. (C). Ovarian.