“…Twelve days later the rats were challenged with horse serum or with horse serum and egg white, in each case 1 ml being injected intravenously. Shock values were calculated according to Wilhelm et al [3]. H istam in and serotonine were depleted from Edem a form ation was provoked by intraperitoneal injection of 300 mg/kg clinical dextran or 2 ml fresh egg white.…”