I had read all the suggestions given in the page, thought maybe someone can give me some suggestions to my protocol as well.
I am relatively new in ACC field. Recently i just got 3 vials of Pig bone marrow cells (primary cells). As far as i know, those vials were frozen for about... 5 months in - 80'C. Will that affect the cells viability since they are stored in -80'C for so long and also they were taken in & out of the -80'C occasionally?
When i thawed the cells which i was given and observed them, they were like..... DEAD! omg... i'm not sure whether is the protocol or if is just ME.
i thawed the cells according to the protocol:
take vials out from -80'C
thaw quickly in 37'C water bath
transfer content to 15ml centrifuge tube
add 10ml complete media dropwise to content
spin @1500rpm, 5mins
discard media (with DMSO as cryopreservative)
resuspend pellet with 10ml media
cell count & viability check
seed suspension to T25 and incubate.
When i did a viability check and cell count... i have got something like 45% viability for my cells, but after the incubation overnight... they did not attach to flask and were still in suspension. Its my first time dealing with primary cells and i'm not too sure why they always die after the incubation? Never had such problems with cell lines.