Secretory antibody responses in cattle infected with foot-and-mouth disease virus.
Antibody responses in serum, saliva, nasal secretions, or esophageal-pharyngeal fluid of foot-and-mouth disease virus-infected steers were examined by single radial immunodiffusion and mouse-neutralization tests. In steers infected with type O foot-and-mouth disease virus, high serum antibody titers were detected within 10 days after infection. Antibody was first detected in saliva at 30 days and gradually increased to a plateau at about 90 days. Small amounts of antibody continued to be secreted in saliva and in nasal secretions for at least 6 months. Antibody was not detected in esophageal-pharyngeal fluid. The major antibody activity in secretions was due to secretory immunoglobulin A as revealed by radioimmunoelectrophoresis.
D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D000917:Antibody Formation; D005537:Aphthovirus / Q000276:immunology; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology*; D004947:Esophagus / Q000378:metabolism; D005536:Foot-and-Mouth Disease / Q000276:immunology*; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007070:Immunoglobulin A / Q000032:analysis*; D007071:Immunoglobulin A, Secretory / Q000032:analysis*; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis; D008297:Male; D009297:Nasal Mucosa / Q000378:metabolism; D009500:Neutralization Tests; D010614:Pharynx / Q000378:metabolism; D012463:Saliva / Q000276:immunology
D000914:Antibodies, Viral; D007070:Immunoglobulin A; D007071:Immunoglobulin A, Secretory; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins