Fig. 3.

Effect of IM immunization with increased pCMV ECDTM plasmid concentrations on tumor incidence in old Balb/c mice challenged with syngeneic TUBO cells. Old mice received two immunizations with 100, 200, or 300 μg of pCMV ECDTM DNA plasmid and, 2 weeks ago, were challenged with TUBO cells