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Observed attractors for the segment polarity network model. Attractors for the 4 cell model, where each column corresponds to a cell and each row corresponds to a gene/protein (node). Each attractor is a fixed state where each node has state 1 (= white) or 0 (= black). (A1) Attractor corresponding to the wild-type embryo. (A2, A3) Attractors corresponding to other experimentally observed phenotypes.
