FIG 4.

Number of viable C. difficile cells following treatment with phages in vitro. Phage infection was carried out at an MOI of 10. (A, C, and E) CD105HE1 treated with a single phage and two- and three- or four-phage combinations, respectively; (B, D, and F) treatment of CD105LC2 with a single phage and two- and three- or four-phage combinations, respectively. Viable C. difficile cells in the culture medium were enumerated at the different time points. Error bars represent the standard errors of the means (SEMs) of three replicates.