A gel-diffusion, antibody-antigen precipitation test that depends on simple vertical diffusion in one dimension. A gel column is prepared containing a homogeneous distribution of antibody molecules. Above this is layered an aqueous suspension of antigen molecules. As these diffuse into the gel, a moving zone of antigen-antibody precipitate is formed. If several antigens and antibodies are present, separate zones of interaction will be seen. See Chronology, 1946, Oudin.
Subjects: Genetics and Genomics — Chemistry.