<prompt> All are chemokines except -IL-8IL-1HistamineEotaxin  <response>: Histamines are most impoant vasoactive amines , formed by decarboxylation of histidine found in granules of mast cells, basophils in platelets. Reff: Ananthanarayan Panikers textbook of microbiology 9th edition pg: 164 