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Collective motion of cells crawling on a substrate: roles of cell shape and contact inhibition
At the level of a single cell, it is well established that its motion is intricately linked to its shape. The shape of crawling cells is highly variable, depending on the type of cell, the substrate, as well as a result of the migration process itself [ 5 , 6 , 7 , 8 ] . When a cell starts moving, i…
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At the level of a single cell, it is well established that its motion is intricately linked to its shape. The shape of crawling cells is highly variable, depending on the type of cell, the substrate, as well as a result of the migration process itself [ 5 , 6 , 7 , 8 ] . When a cell starts moving, its shape breaks symmetry [ 6 ] , whereas circular cells typically cannot move. While there is evidence that shape has a strong influence on scattering and can lead to clustering and collective directed motion of swimmers [ 9 , 10 ] , less is known about the role of cell shape in organizing collective crawling. It has been shown in simulations that inelastic collisions between crawling cells, e.g. due to deformation, can lead to coherent migration [ 11 , 12 , 13 , 14 ] , suggesting the importance of deformability for collective behavior.