In the presence of Serum/FBS, the cancer stem cells/CSCs tends to differentiate down the lineage of the parental tumor cell. So, in order to isolate CSCs you provide such conditions.
Well, the signalling to begin for proliferation simply requires certain ligand which are present in Serum. So, to isolate the CSCs you should require to culture in serum negative condition. I will suggest you to first read the basics before carrying out your experiments. Thanks
Thank you for your answer. I do know the basics for cell culture so I know the role of the serum in the culture medium. I am asking what is the specific criteria that makes stem cells survive the serum free medium (supplemented with B27, N2, FGF and EGF) and the non-stem cells die?