Movie S3.

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Orientation of simulated spindles in the cells with bilateral symmetric adhesion and various aspect ratios of the stadium shape. The stadium-shaped cells have the bilateral symmetric adhesion (red marked) whose parameters are k=11 and L=12 µm, and the aspect ratio is given as λ=1, 1.2, 1.4, or 2. In these cases, the stable spindle orientation transits from the horizontal to the orthogonal direction with the increase of the cell aspect ratio as the cell area is constant.