Figure 4

Representative views of morphological changes of BL21(DE3)pLysS (pEXH1). Compared to uninduced cells (A), the membrane of induced cells (B) separated from the cell wall. BL21(DE3)pLysS (pEXH1) became quite large in size (C), with an incomplete cell wall which eventually became fragmented. The single arrow indicates a cell of normal size, while double arrows indicate debris of broken cells.