I am working with veroe6 for a while and every time I receive a new healthy flask one or two passages and cells become stressed. Please any one will give help why this happens and how to prevent this and if there is away I can regain the cells healthy without replacing my current stock.
I am using DMEM 10 % horse serum
5 ml ofglutamx and 5ml non essential amino acid
0.08x porcine trypsin and 0.08x versine
Cells dissociation in 4 mnits
Centrifuge 750 rpm 5min
Split ratio 1.3