OVA Peptide 257-264 is primarily used in immunological research as a model antigen to study T-cell responses and immune system mechanisms. It is often employed in experiments involving antigen presentation, particularly in the context of major histocompatibility complex (MHC) class I molecules. This peptide is widely utilized in vaccine development studies to understand how specific peptides can elicit cytotoxic T lymphocyte (CTL) responses. Additionally, it serves as a tool in cancer immunotherapy research, helping to explore strategies for enhancing immune recognition and destruction of tumor cells. Its application extends to studying autoimmune diseases, where researchers investigate the role of peptide-specific T cells in disease progression and potential therapeutic interventions.