Grow STC-1 cells in DMEM:F12 Ham with GlutaMax™ media supplemented with 10 % charcoal absorbed foetal bovine serum (LabTech), 1 mM sodium pyruvate, non-essential amino acids (100 mM) and penicillin (100 U/ml) streptomycin (100 mg/ml) on 12 well plates at 37°C under saturating humidity in a 5% CO2/95% air mixture.