horse immunoglobulins against the autumno-summer tick-borne encephalitis virus could be disintegrated with the aid of papaine to monovalent fab-fragments which ( according to the complement fixation reaction , the test of suppression of the complement fixation , and the hait ) retained the serological activity whose level was compared with that of the serological activity of gamma-globulin .
C0021027
immunoglobulins
C0017007
gamma-globulin