Antigens, Neoplasm/immunology; Cancer Vaccines/therapeutic use; H-2 Antigens/immunology; Immunotherapy, Active; Neoplasms, Experimental/prevention & control; Oncogene Proteins, Viral/immunology; Papillomaviridae/immunology; Repressor Proteins; Vaccines, DNA/therapeutic use; Animals; Antigen Presentation/genetics; Antigens, Neoplasm/biosynthesis; Biolistics; Cancer Vaccines/immunology; Cell Line, Transformed/immunology; Cell Line, Transformed/transplantation; Cell Transformation, Viral; Female; Gene Expression Regulation, Neoplastic; Genes, MHC Class I; Genes, Synthetic; Genes, ras; H-2 Antigens/biosynthesis; H-2 Antigens/genetics; Immunization; Interferon-gamma/pharmacology; Lung; Mice; Mice, Inbred C57BL; Neoplasm Transplantation; Neoplasms, Experimental/immunology; Oncogene Proteins, Viral/genetics; Oncogene Proteins, Viral/physiology; Papillomaviridae/genetics; Papillomavirus E7 Proteins; Recombinant Proteins; Reverse Transcriptase Polymerase Chain Reaction; Transcription, Genetic; Vaccines, DNA/immunology