Fig 1.

Levels of viable vibrios in seawater and shellfish and their persistence over time. (A and B) Counts of wild-type Vibrio parahaemolyticus O3:K6, toxRS deletion mutants, and rpoS deletion mutants in seawater (A) or in oysters maintained in tanks of seawater (B). The error bars in panel A indicate the standard errors of the means (SEM) of three independent experiments, each performed three times in triplicate (n = 27), while the error bars in panel B represent the SEM of three independent experiments each performed in triplicate (n = 9).