GENETICALLY MODIFIED CELL PRODUCTION SYSTEM

A genetically modified cell that can be mass-produced efficiently. The genetically modified cell production system includes a cell-processing isolator for seeding a T cell in a well plate (culture vessel) a cell culture incubator (cell storage) for holding the culture vessel in which the T cell has been seeded and culturing the T cell a virus-processing isolator (nucleic acid preparation isolator) for providing, to the well plate, a virus having a nucleic acid containing a gene to be introduced into a cell a virus storage (nucleic acid storage) for holding the well plate from the virus-processing isolator and a virus infection isolator (nucleic acid introduction isolator) for introducing the nucleic acid into the T cell by infecting the T cell with the virus.