EN
It might be concluded from the obtained results that no significant serological differences exist between the T. spirails antigens prepared from larvae deriving from muscles of rabbits, rats or pigs, when the methods applied in this study were used. All the three antigens showed the simillar ability of the complement fixation when tested against the rabbit immune sera as well as against those of persons suffering from trichinellosis. The antigens behaved also in the simillar way towards sera of normal persons and towards Ascaris, Echinococcus and Cysticercus immune sera. The results of present experiments do not confirm Gaase's opinion, who suggested that antigen prepared from. T. spiralis larvae isolated from muscles of swine are superior to these obtained from muscles of rats (2). Studies on larger material using other serological methods should be needed to drow out some more detailed conclusions.