Fig. 2. A sequence of six confocal micrographs of a planar view of the neural plate of an embryo that had received an injection of mRNA encoding tau:GFP. A cell about to divide (arrow in 0') has left the epithelium and come to be located apically (arrows track its progress). The cell has developed processes oriented to the midline (thin white line in each photograph). During convergence, the dividing cell maintains the same neighbours (the asterisk on the neighbouring cells is for reference).