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Immune Response parameters after i.v. injection of vvDD (GM-CSF−) or JX-963 (GM-CSF+). (a) Antivaccinia neutralizing antibody development over time. (b) Induction of VX2 tumor-targeting cytotoxic T lymphocytes (CTL) following i.v. administration of vvDD or JX-963 (*, P<0.05 between groups); E/T ratio, ratio of effector cells to target cells.
