English: Anterior adaxial cells are non migratory. This movie shows adaxial cell behaviour during the migration period (15–22 somite) captured using fluorescence microscopy. Embryos were injected at 1-cell stage with a DNA construct containing the GFP gene under the control of the smyhc promoter to induce mosaically the expression of the GFP in individual the adaxial cells. Here the transgenically labelled, partially elongaet, adaxial cell located in the anterior most position of the somite at its DV mid point (*) remain adjacent to the notochord. Cells in the more anterior somites are actively migrating to the lateral surface of the myotome, and quickly move out of focus as the movies progresses. Anterior (A) and posterior (P) orientation, notochord (nc) and somite boundaries (arrows) are shown. (dorsal view, anterior toward the bottom left). (AVI). Frames every 20 mins, 450 mins total.