title: Determination of the soybean root-nodule origin by the Ouchterlony method.
mesh_terms: D000818:Animals; D007106:Immune Sera; D005779:Immunodiffusion; D011817:Rabbits; D012231:Rhizobium / Q000276:immunology*; D012703:Serotyping; D013025:Glycine max
chemical_list: D007106:Immune Sera