Fig. 3: Speed gain depends on swimming characteristics.
From: A transition to stable one-dimensional swimming enhances E. coli motility through narrow channels
a Speed gain (from 3.9 to 2.3 μm) and wall distances versus wobbling amplitude w and pitch angle θ. Each cell appears as a point in the scatter plots. Dashed lines represent mean values. Wall distance, w, and θ are all measured in the largest tunnel (3.9 μm). Error bars (s.e.m.) are always within the symbol size. b Cells with low w and high θ display a substantial speed increase with confinement (purple) which is connected to a marked increase in the distance from the wall below 2.5 μm. The speeds are normalized to the values in the largest microtunnel. No significant speed gain is observed for cells with high w and low θ (green) for which the wall distance progressively decreases with confinement. Plotted error bars represent s.e.m.
