ToxoplasmaToxoplasmosisToxoplasmosis, AnimalToxoplasmosis, CerebralAntibodies, ProtozoanToxoplasmosis, CongenitalProtozoan ProteinsHost-Parasite InteractionsToxoplasmosis, OcularAntigens, ProtozoanSulfadiazineDNA, ProtozoanApicomplexaProtozoan VaccinesNeosporaCoccidiostatsChorioretinitisPregnancy Complications, ParasiticOocystsHost SpecificityAntiprotozoal AgentsSpiramycinGenes, ProtozoanSeroepidemiologic StudiesImmunoglobulin MMolecular Sequence DataHost-Pathogen InteractionsImmunoglobulin GParasitesLife Cycle StagesVirulenceInterferon-gammaOrganellesMice, Inbred C57BLVacuolesEnzyme-Linked Immunosorbent AssayMice, Inbred BALB CCoccidiosisImmunity, InnateMacrophagesAmino Acid SequenceCat DiseasesCells, CulturedEncephalitisSarcocystisParasitologyFood Parasitology