As a first time BEAS-2B cells user, I have a couple of questions concerning the usage of PVP (Polyvinylpyrrolidone).
1. I have two types of PVP in our lab, 10KDa and 40KDa. Which one is preferable for cryopreservation of BEAS-2B?
2. Do you use PVP at other stages? Some protocols mention adding PVP to trypsin, some protocols don't.
Thank you!