Volumes are given for a 25cm2 flask. Increase or decrease the amount of dissociation medium needed proportionally for culture vessels of other sizes. - Remove and discard culture medium.
- Briefly rinse the cell layer with 0.25%(w/v) Trypsin-EDTA solution to remove all traces of serum that contains trypsin inhibitor.
- Add 1.0 to 2.0mL of Trypsin-EDTA solution to flask and observe cells under an inverted microscope until cell layer is dispersed. Discard Trypsin-EDTA solution.
- Add 6.0 to 8.0mL of complete growth medium and aspirate cells by gently pipetting.
- Add appropriate aliquots of the cell suspension to new culture vessels.
Cultures can be established between 2×103 and 1×104 viable cells/cm2. Do not exceed 7×104 cells/cm2. - Incubate cultures at 37°C, 5% CO2.
|