Fig. 2
From: Bacillus subtilis biofilm development in the presence of soil clay minerals and iron oxides
ATR-FTIR assays of the biofilm formation at 24 (a), 36 (b), 48 (c), and 60 h (d). At each time point, the absorbance spectra were given for control (Ctrl), goethite (Goe), montmorillonite (Mon), and kaolinite (Kao) seperatedly, as indicated in figure legends. Representive peaks (nucleic acids, polysaccharides, proteins, etc.) were labeled on the top of curves, respectively
