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Fig. 6. Luminal epithelial cells and myoepithelial cells can deposit both {alpha}3-chain and {alpha}5-chain of laminin but only myoepithelial cells can deposit laminin-{alpha}1 chain. Luminal epithelial cells (a,c,e) and myoepithelial cells (b,d,f) embedded in rBM were stained for laminin {alpha}1 (a,b; green), laminin {alpha}3 (c,d; green) and laminin {alpha}5 (e,f; green). Both luminal epithelial cells and myoepithelial cells deposit a basement membrane except for the lack of {alpha}1-chain deposition by the former. Nuclear stain, red. (bar, 25 µm).