Schematic showing the bias of ENCCs to be displaced along the rostrocaudal and circumferential direction. The purple cell represents ENCCs at the migratory front of NC cells in the colon, which have equal probability to be displaced in all directions (equal size of arrows). The red cell represents more rostral ENCCs, which show a bias towards caudal displacement (caudally directed arrow is larger than the others) and allows them to overtake the leader cells ahead of them. The green cell represents pre-cecal ENCCs within the small intestine that migrate mostly circumferentially and show minimal caudal displacement (arrows along the long axis of the gut are smaller). Shaded area indicates the portion of the gastrointestinal tract that has been colonized by ENCCs.