Wid type lambda form cloudy plaques 11.5 Lysogeny is maintained by an autogenous circuit Figure 11 13 Wild-type and virulent lambda mutants can be irulent mutants fom cbar plaques distinguished by their plaque types. Photograph kindly provided by Dale Kaiser 消当Figure 11.13 Wild-type and virulent lambda mutants can be distinguished by their plaque types. Photograph kindly provided by Dale Kaiser. 11.5 Lysogeny is maintained by an autogenous circuit