Reversed immunofixation agar gel electrophoresis.

A method has been elaborated for investigation of biological fluids on the basis of the theory of the immunofixation electrophoresis. In spite of the usual methods of the immunofixation electrophoresis it is the antibody which moves by the electrophoresis and not the antigen. The antibody stains are fixed with cellulose acetate strip soaked with a suitably diluted antigen solution after electrophoresis. This method uses only a small quantity of the immune serum.