In vivo expression technology was used for testing Pseudomonas aeruginosa i
n the rat lung model of chronic infection and in a mouse model of systemic
infection. Three of the eight ivi proteins found showed sequence identity t
o known virulence factors involved in iron acquisition via an open reading
frame (called pvdI) implicated in pyoverdine biosynthesis, membrane biogene
sis (FtsY), and adhesion (Hag2).