Figure 5

Penetration of TP25 and TP26 into the target bacterial cells. Micrococcus luteus was incubated with FITC-labeled TP25 (D and E), FITC-labeled TP26 (G and H) or FITC-labeled control peptide P86P15 (A and B) for 0.5 h. After quenching extracellular fluorescence, the cells were observed as above under a microscope with (B, E and H) or without (A, D and G) fluorescence. C, merged image of A and B; F, merged image of D and E; I, merged image of G and H. Magnification, 4000 × .