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Fig. 3. Live imaging of FN remodeling during salivary gland branching morphogenesis. A live embryonic mouse salivary gland epithelial rudiment was incubated with media containing labeled soluble FN (green), washed and subsequently labeled via incubation with media containing red-labeled FN. Assembled (green) FN accumulates in clefts, whereas newer (red) FN is incorporated distal to the cleft. Scale bar: 100 µm. Adapted from Larsen et al. (Larsen et al., 2006).