Sequential snapshots of RBCs (red) and platelets (white) traveling in the four MA microchannels with BNR = (A) 8, (B) 5.4, (C) 3, (D) 2.2, during the simulation time of 1.3 seconds.

The timestamp increases sequentially from snapshot (I) to (IV). In (A) and (B), four RBCs are highlighted in blue to track their motion during the simulation. No.1 and No.2 RBCs are initially located in the parent channels whereas No.3 and No.4 RBCs are initially located inside MAs. In (C) and (D), two RBCs are highlighted in blue to track their motion during the simulation. The blood flow velocity at the inlet is 1.5 mm/s for all the four MA channels. Solvent particles are omitted for clarity.