Roth, J A Characterization of protective antigens and the protective immune response. [electronic resource] - Veterinary microbiology Nov 1993 - 193-9 p. digital Publication Type: Journal Article; Review ISSN: 0378-1135 Standard No.: 10.1016/0378-1135(93)90022-y doi Subjects--Topical Terms: AnimalsAntibody Formation--immunologyAntigens, Bacterial--immunologyAntigens, Viral--immunologyBacterial Vaccines--immunologyImmunity, Cellular--immunologyImmunoglobulin A, Secretory--immunologyT-Lymphocytes, Cytotoxic--immunologyViral Vaccines--immunology