Figure 5.

Simple perfusion apparatus. (A) 8-traps of the hydrodynamic trap array. (B) Macroscale view of the SPA. (C) Individual trap. Red represents trapping channel and blue represents the bypass channel. (D) Individual, immature sea star oocytes within the traps. Oocytes are loaded from the right to left in the device. (E) Indirect trapping: occurs when trap resistance is greater than the bypass channel resistance and oocyte goes in bypass channel. (F) Direct trapping: occurs when trap resistance is lower than bypass channel resistance and oocyte goes in trap [72].