Animals, Apoptosis, Caspases, DNA-Binding Proteins, Gene Expression Regulation, HLA-DR5 Antigen, Humans, Insulin-Like Growth Factor Binding Protein 3, Neoplasms, Nuclear Proteins, Proto-Oncogene Proteins, Proto-Oncogene Proteins c-bcl-2, Transcription, Genetic, Tumor Suppressor Protein p53, bcl-2-Associated X Protein, fas Receptor