hello every one.
i am going to culture ips cells .i have 4 option:1.culture of cell with fedeer layer in media supllemented with nockout SR.2.culture of cell with fedeer layer in media supllemented with FBS.3.culture of cell without fedeer layer in media supllemented with nockout SR.4.culture of cell without fedeer layer in media supllemented with FBS.wich option is better for culture of cell with high viability?