Bioreactor system

A bioreactor system, comprising:

• a reactor unit for culturing or proliferating cells or for secretion of exosomes from the cells;
• a solution supply unit, wherein a predetermined amount of a solution to be supplied to the reactor unit is stored in the solution supply unit;
• a circulation pump, wherein the circulation pump is connected to the reactor unit and the solution supply unit via a tube and configured to circulate the solution stored in the solution supply unit;
• and
• a gas supply unit, wherein the gas supply unit comprises a main body having a gas storage space filled with a gas supplied from outside, and the gas supply unit is installed in the solution supply unit to supply the gas stored in the gas storage space to the solution stored in the solution supply unit,
• wherein the main body is arranged to be submerged in the solution filled in the solution supply unit so that the gas stored in the gas storage space can toward the solution and dissolve.