They are proliferating but does not attach to the T75 and T25 cell culture flasks. I also used 6 well plate to attach the cells but they did not attach. I tried to use different combinations of media solution, such as DMEM/F12 + %10 FBS + 2mM L-glutamine; DMEM/F12 + %20 FBS + 2mM L-glutamine; DMEM/F12 + %10 FBS. Then I incubate the cells at 37oC in a humidified atmosphere of 5% CO2 incubator.
Do you have any ideas ? What is wrong that I do?