signaling GO:0023046 Note that a signal is any variable property or parameter that serves to convey information, and may be a physical entity such as a gene product or small molecule, a photon, or a change in state such as movement or voltage change. 2010-02-16T09:30:50Z GO:0044700 signalling process GO:0023052 The entirety of a process in which information is transmitted within a biological system. This process begins with an active signal and ends when a cellular response has been triggered. biological signaling jl single organism signaling signaling process signalling biological phase regulation of biological process