FIG. 6.

Change in the plasma sodium concentration during oral infection of calves with Salmonella serotype Typhimurium strains. The graph shows the difference in the plasma sodium concentration between a sample collected on day 2 postinfection and a preinfection sample. Solid circles indicate that the plasma sodium concentration on day 2 postinfection was below the normal range. The open circle indicates that the plasma sodium concentration on day 2 postinfection was within the normal range. WT, wild type.