Column A lists the identity of each clone. Column B lists the starting position of a subset of the clones in a ureteric bud tip (starting position was only measured in those ureteric bud tips whose shape permitted the proximal-distal and medial-lateral axes to be determined). The first number is the position along the proximal-distal axis (min 0, max 10) and the second number is the position along the medial-lateral axis (min 0, max 10). These numbers were used to position a symbol along the proximal-distal and medial-lateral axes of the idealized ureteric bud tip in Fig 6F. Columns C-F indicate the location(S) of the daughter cells of each clone at the end of the time-lapse sequence. Clones with daughters in tip, or tip and trunk, are indicated in Fig 6F by red symbols, and clones with daughters only in trunk are indicated in Fig 6F by blue symbols. For questions, contact Frank Costantini fdc3@columbia.edu.