Fig 4. Graphic representation of the arrays of spacers in the CRISPR-cas subtype I-Fb locus of Acinetobacter baumannii.
The figure demonstrated the assortment of 74 A. baumannii isolates into 40 CRISPR sequence types (CST) based on the spacer content of their CRISPR arrays. Spacers were represented by red rectangles. Each unique spacer was assigned a number (1–876). Spacers were sequentially aligned in order to facilitate comparison among the CSTs.