Fig. 4

Transmission electron microscopic morphology of E. coli cells: a = after 6-h exposure to 0.04 mg/mL extract of Syzygium legatii (cell membrane detaching from cell, misshapen cells), b = after 12-h exposure to 0.04 mg/mL extract of Syzygium legatii (late stage cell death. Ghost cells with no cytoplasmic content. Cell walls appear intact), c = after 24-h exposure to 0.04 mg/mL extract of Syzygium legatii (cell at late stage of death, condensed chromatin), d = after 6-h exposure to 0.04 mg/mL extract of Eugenia zeyheri (cell membrane detaching from cell, misshapen cells with loss of structure), e = after 12-h exposure to 0.04 mg/mL extract of Eugenia zeyheri (cell membrane detaching from cell, misshapen cells with loss of turgidity, condensation and aggregation of nuclear chromatin), f = after 24-h exposure to 0.04 mg/mL extract of Eugenia zeyheri (cells show detachment of membrane from cell wall. Electron sparse cytoplasm, condensed chromatin)