HLA-DMA (Major Histocompatibility Complex, Class II, DM Alpha): HLA-DMA is a protein involved in the immune system’s antigen presentation pathway. It plays a crucial role in regulating peptide loading onto MHC class II molecules, allowing immune cells to effectively present antigens to T cells. This function is vital for initiating immune responses against pathogens and maintaining immune tolerance. Changes in HLA-DMA activity can affect immune function and are associated with several autoimmune disorders, underscoring its importance in immune regulation and disease susceptibility.