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The distribution of cells in clones descended from neural plate progenitors. A, The percentage of radial clones containing progeny in two nonadjacent layers (GC,BH; GC,PH; AM,PH), in three layers, or in four layers. B, The percentage of layered clones containing progeny in single layers (left side) or two adjacent layers (right side). In both categories, layered clones are found predominantly in the inner nuclear layer (BH; AM; AM,BH).
