... is established in the embryo of the brown alga Saccharina , a kelp species. Semi-thin sections, taken from where growth shifts from 2D to 3D, show that 3D growth first initiates from symmetrical cell division in the monolayered lamina, and then is enhanced through a series of asymmetrical cell divisions...

... Cell proliferation Asymmetrical cell division p27 Kip1 Ventricular zone The adult neocortex (hereafter called the cortex) is composed of six radial layers of neurones, each defined by cellular morphology, cell density and the formation of distinct axonal connections. During development...