title: Ammonium thiocyanate for detaching antibodies from histological specimens.
abstract: When different antigens must be demonstrated in the same structure, the permanence of former antibodies can lead to false identification of another antigen. The peroxidase-antiperoxidase method was used, followed by the oxygen acceptor ethyl-carbazole. After staining the sections, they were destained with xylene and the antibodies detached with 3 M ammonium thiocyanate; then the specimens were treated for the demonstration of the other antigen. The procedure could be repeated and thus as many as four antigens could be demonstrated without damaging the tissues. Antigens participating in the immunohistochemical staining were well-preserved after destaining and detaching the antibodies as demonstrated by their ability to react again in a second staining.
authors.affiliation: Centro de Estudios Endocrinos, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, Argentina.
authors.forename: F C
authors.initials: FC
authors.lastname: Iturriza
authors.forename: C L
authors.initials: CL
authors.lastname: Gómez Dumm
authors.forename: C E
authors.initials: CE
authors.lastname: Bianchi
mesh_terms: D000818:Animals; D000906:Antibodies; D000941:Antigens / Q000032:analysis; D016591:Histocytological Preparation Techniques; D051381:Rats; D013861:Thiocyanates
chemical_list: D000906:Antibodies; D000941:Antigens; D013861:Thiocyanates; C026976:thiocyanic acid