Figure-1.

Relative expression of RNAIII, intercellular adhesion cluster (ica)-9, and ica-15 in Staphylococcus aureus (ATCC 43300) was cultured with 1/3minimum inhibitory concentration of essential oils (A) and (E) to the post-exponential growth phase (t=8h). Transcript levels were monitored by quantitative real-time polymerase chain reaction as described in the Materials and Methods. The relative gene expression levels were normalized to 16S rRNA, and the drug-free culture was used as a calibrator. Value >0 indicates upregulation and <0 indicates down-regulation.