Video 7. Long-term tracking of the mesodermal progenitors.

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13 hr time-lapse movie of a GFP chicken embryo starting at stage 5HH (left). Fate of the color-coded mesodermal primitive streak (PS) progenitor territories during regression is shown in the right movie. NMP: neuromesodermal progenitors (gold); PMP: presomitic mesoderm progenitors (green); LPP: lateral plate progenitor; LPP-EMP: extraembryonic mesoderm precursors (blue-purple). Arrowhead: Hensen’s node. Anterior to the top. t = 4 min. 20× objective, LSM 780.