Figure 1From: Delivering the pain: an overview of the type III secretion system with special consideration for aquatic pathogens(reproduced with permission from Troisfontaines and Cornelis [16]).Phylogenetic tree of the best characterized T3SS families. The tree was prepared using aligned sequences from the Ribosomal Database Project II and the various sequences were allocated into 7 major families of T3SS based on homologyBack to article page