definiens: mall be defined u mhLbLllon of lotU"illon of thrombin re«ptOr(s ) by thrombin or onc or more thrombin receptOr ~lonUl peptldes ( TRAPs ) but not by .,o, um that 6/'C IIOt $ pecLfically coupled 10 the thrombIn receptOr ( e. I .. calcIum lonop/'1orn ) or as supulated for ~ p&rUcul~ us.ay . s / Wl be defined as the IndUCUOl1 of tile putlcuw phySiolOllc response sated In the utle of the aswy by KIJVauon of thrombin · reccptor(s ) but not by lotuvauon of Other reccptors . The cnICria for recolnLZLnI thrombin recCJ){or lCllvLty may be chanla ! by mutua.lalrec ~ t of thc pvties