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. 2019 Mar 1;12:52. doi: 10.3389/fnmol.2019.00052

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Copyright © 2019 Delloye-Bourgeois and Castellani.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Trunk NCCs collective migration strategy. Collective migration of trunk NCCs figured as the result of combined environmental influences (environmental force, 1) and NCC population intrinsic influences (NCCs “population-autonomous” forces). The latter encompass a co-attraction mechanism (2) led by C3a ligand/receptor co-expression within the NCC stream and contact inhibition of locomotion (CIL; 3) ensuring NCCs migration stop and repolarization upon cell-cell collision. These mechanisms act in concert to drive a supracellular organization and migration of the NCCs stream.