Figure 4.

Differential response of WT cells to attractant and repellent. Difference calculations are described in the text. (A) Difference in normalized cell counts in the presence of l-aspartate: buffer only (●), 3.2 nM (▵), 10 nM (□), and 1 mM (◊). (B) Difference in normalized cell count for WT cells in the presence of Ni²⁺: 10 μM (▵), 1 mM (□), and 10 mM (◊). (C) Difference in normalized cell count for WT cells in the presence of l-serine: 1 μM (▵), 1 mM (□), and 10 mM (◊). (D) Difference in normalized cell count in the presence of l-leucine: 1 μM (▵), 100 μM (□), and 10 mM (◊).