Two types of 127-kb tandem MGE detected in multi-drug resistant S. suis ST7 isolates in lineage III. The 127-kb MGE encodes eight antibiotic resistance genes. The integrative and conjugative elements (ICE, in orange) and prophage (in purple), both of which are flanked by att sites, are tandemly arranged in two possible orders. The antibiotic-resistance genes are indicated in red. The chromosomal conserved genes around MGE are indicated in black. 