FN1 and breast carcinoma: Breast carcinoma cell lines MCF-7 (MCF), MDA-MB-231 (MDA), and SK-BR-3 (SKB) showed a diverse migration potency dependent on the cell line and the substratum, when seeded at low density on cell culture plastic (PL), fibronectin (FN), or laminin (LN) surfaces and analysed by video time-lapse for 24 h (Figure 1).