Cytokine just means ‘cell signalling molecule’. The word doesn’t tell us anything, or anything much at all, about what those cell signalling molecules do, wher

Cytokine just means ‘cell signalling molecule’. The word doesn’t tell us anything, or anything much at all, about what those cell signalling molecules do, where they came from, nor what their target / recipients are. Source: studied a bit of anatomy and physiology & pathophysiology along the way. From Wikipedia: The word comes from Greek: cyto, from Greek "κύτος" kytos "cavity, cell" + kines, from Greek "κίνησις" kinēsis "movement". https://en.wikipedia.org/wiki/Cytokine https://en.wikipedia.org/wiki/Cytokine