Movie 1

Kidney culture with Rosa26RetWT recombinant cells. At the start of the movie, recombinant cells are present in two UB ampullae. In the ampullae at the top, the cells form a single cluster that remains at one tip during branching and elongation. In the ampulla at lower left, the cells move extensively and are eventually distributed among four new tips that form by branching.

Development ; doi: 10.1242/dev.199386