2X Cell-freezing medium
40% (v/v/v) Dulbecco’s modified Eagle’s medium (DMEM; Gibco/Invitrogen 11960-044)
40% (v/v/v) Fetal bovine serum (FBS; Hyclone SH30070.03)
40% (v/v/v) Dulbecco’s modified Eagle’s medium (DMEM; Gibco/Invitrogen 11960-044)
40% (v/v/v) Fetal bovine serum (FBS; Hyclone SH30070.03)