FIGURE 2.

Dimensionless chemoattractant concentration for a spherical cell (A) and a cell with a 4-μm pseudopod (B). (C) Relative chemoattractant concentration verses the distance from the pipet orifice (S ordinate), which before reaching the cell surface is measured along the axes of symmetry and after reaching the cell surface is measured along the cell surface. The chemoattractant concentrations are scaled relative to the chemoattractant concentration in the delivery pipet. The concentration profiles for a spherical cell and for a cell with a 4-μm pseudopod are almost equivalent at steady state (the two curves are on top of each other). The dashed line marks the distance between the cell and the orifice of the delivery pipet.