ARPE-19 cells are retinal epithelial cell line that can get differentiated when fed with low levels of serum (1%) for at least two months.

After the differentiation, they loose the ability to replicate and they are more similar to the in vivo condition. Since they cannot replicate, I really don't know how to store them. I tried to freeze them as usual by using FBS+ 1% DMSO, store them in -80°C and then seed them again: in this case, some of them attached to the petri, but a larger part died. Can you help me? I would appreciate any advice from you all to escape this situation! Thank you!

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