CTL Response with Antitumor Activity in Elicits a Powerful Human Antigen-Specific Oxaliplatin, 5-Fluorouracil, and Leucovorin, Multidrug Regimen with Gemcitabine, Cells Exposed to a Highly Cytotoxic of Antigens Derived from Colon Carcinoma Dendritic Cell-Mediated Cross-Presentation