Bioscreen C analysis of the growth of S. enterica serovar Typhimurium strain ATCC 14028 and S. enterica serovar Enteritidis strain SE147Nalr and their derivatives deficient in IROMPs over time (t). (a) Growth of strains ATCC 14028 (▪), WR1726 (iroN) (□), WR1727 (fepA iroN) (▵), and WR1728 (fepA iroN cir) (×). (b) Growth of strains SE147Nalr (□), WR1425 (fepA) (▵), WR1530 (cir) (⋄), and WR1434 (fepA iroN) (×). Culture densities (OD600) were monitored at 37°C for 18 h, and each line represents the average data from 20 replicate wells.