Figure 4

SEM images of B. subtilis and SEM-EDS of planktionic cells (a); SEM of Cr-loaded B. subtilis and SEM-EDS of Cr-load planktionic cells (b).
SEM images of B. subtilis and SEM-EDS of planktionic cells (a); SEM of Cr-loaded B. subtilis and SEM-EDS of Cr-load planktionic cells (b).