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Tumor resistance to CEA DNA vaccination in an MC32 colon cancer model: A loss of antigen presentation to Ag-specific CTLs or an antigen expression

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IL-2 and anti-4-1BB antibodies synergized to augment E7 DNA vaccine-mediated antitumor therapeutic activity by increasing antigen-specific CTL responses in an animal model of cervical cancer

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CEA DNA vaccines plus anti-4-1BB antibodies augmented antigen-specific CTL and antitumor protective activity, but not antitumor therapeutic activity: a possible mechanism for antutumor activity

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Combined stimulation of TLR9 and 4.1BB receptors enhances Trp2 peptide-mediated B16 melanoma regression by increasing Ag-specific CTL activity and infiltration to tumor sites