Fig. 4. Regularity index of the mosaics of undifferentiated cells, and subsequent primary and secondary fate cells, as a function of packing intensity of the undifferentiated mosaic. This figure summarises the same simulations as described in Fig. 3. The symbols for undifferentiated and secondary fate cells have been horizontally shifted slightly so that symbols do not overlap. (A) Effect of all-neighbours inhibition upon the regularity index. (B) Effect of nearest-neighbour inhibition. (C) Effect of the largest one-step method. (D) Effect of the smallest one-step method. The effects of random and left-right methods were similar to C,D and so are not shown here.

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