What is Major Histocompatibility Complex Class II?
Major Histocompatibility Complex (MHC) Class II is a set of cell surface proteins essential for the immune system to recognize foreign molecules. These proteins are involved in the process of antigen presentation and are critical for the immune response. MHC Class II molecules are primarily expressed on professional antigen-presenting cells (APCs) such as dendritic cells, macrophages, and B cells.