MOESM1 of Lsr operon is associated with AI-2 transfer and pathogenicity in avian pathogenic Escherichia coli ZuoJiakun YinHuifang HuJiangang MiaoJinfeng ChenZhaoguo QiKezong WangZhihao GongJiansen PhouthapaneVanhnaseng JiangWei MiRongsheng huangYan WangChen HanXiangan 2019 Additional file 1. The distribution of lsr operon in APEC strains.