Live imaging of BB movements in a FP cell displaying a membrane digitation between BB and the posterior membrane (yellow arrow at t=115 min). wt embryos were injected with Centrin-GFP (green) and membrane-Cherry (magenta) mRNAs at the one-cell stage. White arrows point at the BB. Images were taken every 5 minutes during the 6 s to 9 s stages time-frame. Dorsal view. Corresponds to Fig3A upper row.