TY - GEN AU - Dubey,J P AU - Baker,D G AU - Davis,S W AU - Urban,J F AU - Shen,S K TI - Persistence of immunity to toxoplasmosis in pigs vaccinated with a nonpersistent strain of Toxoplasma gondii SN - 0002-9645 PY - 1994///1201 KW - Animals KW - Antibodies, Protozoan KW - blood KW - Biological Assay KW - Intestine, Small KW - parasitology KW - Lung KW - Mice KW - Protozoan Vaccines KW - immunology KW - Swine KW - Swine Diseases KW - Time Factors KW - Toxoplasma KW - isolation & purification KW - Toxoplasmosis, Animal KW - Vaccines N1 - Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ER -