pathway
signaling pathway
PW:0000003
Signal Transduction
The definition was compiled based on a number of definitions available in various dictionaries.
The pathways where a signal - hormone, neurotransmitter, growth factor, peptide, any molecule - triggers one or multiple cascades of events. This involves a number of molecules, including receptors, proteins, ligands, messengers, any participating molecule. A signaling pathway may be upstream or downstream of other signaling pathways. Signaling pathways control a very broad spectrum of processes as well as pathways.
pathway