I had successful experience using lentivirus to infect 293T and ThP-1 cell lines.
I am recently using pEasiLv system infecting HeLa cell but never got a single positive cell. I repeated 3 times but nothing happened at all.
Does anybody have experience with HeLa cell infection? I thought it is common and should not have any problem with the infection. Is there something special to HeLa cells?
I used pEasiLv backbone for transferring DNA, pMDG for env, p8.9 for packaging.