Fig. 2

CAST-R-based AST of representative MAB strains for CLA and LZD. (A) Change of Raman spectra under an increasing level of D2O at 24Â h. (B) Correlation among C-D ratio, D2O concentration and incubation duration for MAB. (C) MIL of one CLA-S (MAB ATCC19977) and one CLA-R strain (MAB XA53) under 0-128Â mg/L CLA. (D) MIL of one LZD-S (MAB ATCC19977) and one LZD-R strain (MAB CS22) under 0-256Â mg/L LZD. The red dashed lines are the criteria to distinguish the S and R strains