Fig. 3From: The roles of small RNAs: insights from bacterial quorum sensingTwo systems for intra/inter-species communication respectively. A single bacterium can have two sets of signaling methods for intraspecies and interspecies communication. The mechanism is identical while the signaling molecule is different between two systems. All discovered bacteria which utilise quorum sensing communicate through the same signaling molecule where inter-species communication is neededBack to article page