has role protective antigen role OprF Oliver He Allen Xiang The oprF gene was cloned into plasmid vector pVR1020, and the plasmid vaccines were delivered to mice by biolistic (gene gun) intradermal inoculation. Following the initial immunization and two consecutive boosts, each at 2-week intervals, protection was demonstrated in a mouse model of chronic pulmonary infection by P. aeruginosa. Eight days postchallenge, both lungs were removed and examined. A significant reduction in the presence of severe macroscopic lesions, as well as in the number of bacteria present in the lungs, was seen [PubMed: 11292786]. Protegen ID: 843; NCBI Gene GI: 878442; NCBI Protein GI: 15596974; NCBI Protein Accession: NP_250468; NCBITaxon: 208964 protein PstS3