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Immunity to experimental fowl typhoid in chickens induced by a virulence plasmid-cured derivative of Salmonella gallinarum.
Chickens were immunized by two intramuscular inoculations at 1 and 14 days of age with virulence plasmid-cured derivatives of Salmonella gallinarum and were challenged 14 days later by oral inoculation of ca. 50 50% lethal doses (LD50) of fully virulent S. gallinarum 9. Mortality in the nonimmunized...
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado: |
1990
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| Acceso en liña: | https://ncbi.nlm.nih.gov/pmc/articles/PMC258809/ https://ncbi.nlm.nih.gov/pubmed/2194968 |
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