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. Author manuscript; available in PMC: 2013 Aug 19.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2010;2010:3808–3811. doi: 10.1109/IEMBS.2010.5627601

Fig. 2.

Fig. 2

Topological changes when cells grow or their boundaries move. (a) Edge swap. When two previously disconnected cells expand to meet while pushing away two previously connected cells, we replace one edge with a new edge.(b) Void removal. When three cells come into contact, the triangular empty space is replaced by a vertex where the edges meet.