CAR and CIN were assayed at the MIC, 1/2 MIC, 1/4 MIC, 1/8
MIC, 1/16 MIC and 1/32 MIC in different combinations of each of the
different concentrations of each compound. Synergywas defined as
FIC 0.5; indifference (no interaction) was defined as FIC > 0.5e4;
and antagonism was defined as FIC > 4