Figure 3.

Concentration of red blood cells in a confluence in 2D planar projection (a) along the upper branch and (b) along the main channel. Microparticle concentration in 2D radial projection is shown (c) along the upper branch and (d) along the main channel. The cell-free layer near the inner boundary decreases at the end of the branches, whereas it increases near the outer boundary. Inside the main channel, an additional cell-free layer in the center develops. To see this figure in color, go online.