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In this study, a new subunit vaccine that comprised native F1 and recombinant rV270 was evaluated for protective efficacy using mouse, guinea pig and rabbit models in comparison with the live attenuated vaccine EV76. Complete protection against challenging with 10 6 colony-forming units (CFU) of virulent Yersinia pestis strain 141 was observed for mice immunized with the subunit vaccines and...
F1 antigen is an attractive candidate for the development of a subunit vaccine against plague. In previous study, the extraction of this antigen from Yersinia pestis is characterized by using organic solvents. In this work, a new purification strategy that produced high-purity F1 antigen from Y. pestis EV76 was developed by the substitution of physical disruption for organic solvent one, followed...
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