Expression profiling of NMF and BJ3Z. A. Hematoxylin & eosin stained clusters of NMF or BJ3Z cells cultured in Matrigel, bar: 100 μm. B. Hierarchical clustering of microarray data NMF (blue box) versus BJ3Z (red box), n = 3, using ANOVA p < 0.05. C. Sub-selected genes down (in green) or up-regulated (red) in BJ3Z cells by microarray were confirmed by semi-quantitative RT-PCR (lower panels), β-actin levels were used as loading control. D. NMF or BJ3Z cells in Matrigel were stained for members of the PDGF pathway: PDGF-A, PDGF-B, PDGFR-α and PDGFR-β.