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. 2018 Apr 26;13(4):e0196520. doi: 10.1371/journal.pone.0196520

Table 2. Minimum and fractional inhibitory concentrations of compounds against Streptomyces scabies PS07.

Strain MIC alone (μg/mL) MIC combined (μg/mL) *FIC index
Iturin A Surfactin Fengycin Iturin A, Surfactin Iturin A, Fengycin Surfactin, Fengycin Iturin A + Surfactin Iturin A + Fengycin Surfactin + Fengycin
PS07 >64 >64 >64 >64, >64 >64, >64 >64, >64 2 2 2

*FIC ≤0.5 (synergy); FIC >0.5 but ≤4 (no interaction); FIC >4 (antagonism)