FIG 6 .
Effect of additional rctA on origin numbers in cephalexin-treated V. cholerae cells. Cells were treated with cephalexin to prevent chrII loss upon replication/segregation block. Cells are the same as those used in Fig. 3 and 4. (A) The oriI foci are shown in green and oriII foci in red. Note that the oriII foci number reduced when additional RctB sites but not parSII sites were provided. (B) The table shows increase of cell length upon cephalexin treatment and decrease in oriII focus number in the presence of RctB sites. The errors in oriI-to-oriII ratios (σf) represent standard errors of the mean (SE) using the relationship σ2f= (1/b2) σ2a + (a2/b4) σ2b, where σa and σb are the SE of mean copy numbers of oriI (a) and oriII (b).