Fig. 6. pten^– cells undergo natural chemotaxis, but less efficiently than AX2 cells. (A) Selected centroid tracks of one representative AX2 and three representative pten^– cells undergoing chemotaxis in an aggregation territory made up of 90% AX2 and 10% pten^– cells in a submerged culture. (B-D) Velocity plots of one representative majority AX2 cell and two representative minority pten^– cells in a mixed aggregation territory made up of 90% AX2 cells and 10% pten^– cells. (E) Selected centroid tracks of four representative pten^– cells undergoing chemotaxis in an aggregation territory made up of 100% pten^– cells in a submerged culture. (F-H) Velocity plots of three representative pten^– cells in a homogeneous pten^– aggregation territory in a submerged culture. Small arrows in A and E indicate net direction.