Subcultivation Ratio: A subcultivation ratio of 1:2 to 1:3 is recommended
Medium Renewal: Twice per week
Remove medium, add fresh 0.25% trypsin solution for 1 to 3 minutes, remove trypsin and let the culture sit at room temperature for 5 to 10 minutes. Add fresh medium, aspirate and dispense into new flasks. Subculture every 10 days.