Fig 3.

Sulfur K-edge XANES spectra of cysteine (a), E. coli cells not treated with silver (b), S. aureus cells not treated with silver (c), E. coli cells treated with silver nitrate (d), and S. aureus cells treated with silver nitrate (e); LCF of E. coli cells treated with silver nitrate according to Table 2 (broken line) and the experimental results (solid line) (f); and LCF of S. aureus cells treated with silver nitrate according to Table 2 (broken line) and the experimental results (solid line) (g). a.u., arbitrary units.