Fig. 4. Circular visualization of MRSA complete genomes with HL21008 as a reference strain. The inner genome rings showed 100% identity (black), >= 98% (dark magenta) and >= 96% (red) for these reference isolates, reflecting similarity percentages determined by BLAST hit. Black peaks indicate GC content, and the innermost green and purple peaks denote positive and negative GC skews, respectively. MRSA: methicillin-resistant Staphylococcus aureus