Figure 4.

A discriminant analysis of principal components of Raman spectra of axenic and co-cultured S. aureus at different time intervals using Raman spectroscopy. (A) Phenotypic changes between axenic and co-cultured S. aureus at 24 and 48 h in iron-rich conditions. (B) Phenotypic changes between axenic and co-cultured S. aureus in 24 and 48 h in iron-deficient conditions. Different colors denote different bacterial species.