Fig. 4. The position of the Golgi is constant. (A) The position of the Golgi complex in Bsc1 cells grown on 6-µm fibronectin lines (B, back; I, intermediate; F, front). (B) The position of the Golgi complex in Bsc1 cells grown on 6-µm fibronectin lines after reorientation of the migration direction (B/B, initial back position and final back position; I/B, initial intermediate position and final back position; F/B, initial front position and final back position). (C) Sequence of the reorientation of the motility direction of a Bsc1 cell, Golgi (green), nucleus (red). Changes of direction are indicated by asterisks (^*) when the cell reaches the coverslip border, and by a plus sign (+) when the cell encounters another cell. (D) Same as C omitting the transmission channel. (E) Kymograph of the complete sequence shown in C, centered on the nucleus (red). The Golgi complex is shown in green.