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!

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