Used in immunological research to quantify levels of MHC class III proteins in mouse biological samples such as serum, plasma, or tissue homogenates. Enables researchers to study immune system activation, inflammatory responses, and autoimmune diseases in mouse models. Commonly applied in studies related to transplantation immunology, infectious diseases, and cancer immunotherapy to assess immune modulation. Provides a reliable, sensitive, and specific method for detecting protein expression changes during experimental treatments.