Predation of S. marcescens and P. aeruginosa ocular isolates by predatory bacteria.

Co-cultures were prepared by adding host cells to harvested predator cells (∼1×107 PFU final concentration) or predator free control. Values represent the maximum Log10 change measured following 24 or 48 (*) hrs of incubation (compared to t0). Each experiments was conducted twice in triplicate yielding similar results. Value representing the mean and standard error from one representative experiment.n.a.- not applicable.Time 0- initial host concentration (CFU/ml).+ = Increase in host numbers.– = Decrease in host numbers.