Stem Cell Lineage Movies
These movies are from the Supplemental materials:

George T. Eisenhoffer, Hara Kang, and Alejandro Sánchez Alvarado (2008) Molecular Analysis of Stem Cells and Their Descendants during Cell Turnover and Regeneration in the Planarian Schmidtea mediterranea Cell Stem Cell, 3:327-339
Movie S1
Confocal images (5 µm steps, 15 steps) of a double fluorescent in situ for smedwi-1 (green) and Smed-NB.21.11e (magenta) viewed from ventral to dorsal. Anterior is up. The stem cells that express smedwi-1 are located in the mesenchyme posterior to the photoreceptors, while the immediate descendents that express Smed-NB.21.11e are more anterior and superficial on both the dorsal and ventral sides.
Movie S2
Confocal images (5 µm steps, 11 steps) of a double fluorescent in situ for smedwi-1 (green) and Smed-AGAT-1 (magenta) viewed from ventral to dorsal. Anterior is up. The stem cells that express smedwi-1 are located in the mesenchymal space posterior to the photoreceptors and the committed descendents that express Smed-AGAT-1 are more superficial and present out towards the outer margin of the animal on both the dorsal and ventral sides.
Movie S3
Confocal images (3 µm steps, 12 steps) of a double fluorescent in situ for Smed-AGAT-1 (green) and Smed-NB.21.11e (magenta) viewed from ventral to dorsal. Anterior is up. The immediate descendents of the stem cells that express Smed-NB.21.11e are present anterior to the photoreceptors, while the descendents that express Smed-AGAT-1 are present even further anterior and are more superficial.