Abstract

Antibodies of Leptospirae were demonstrated in the sera of immunized rabbits by the indirect immunofluorescence test, only after a suitable dilution of the "anti-rabbit-gamma-globulin fluorescin conjugated" was carried out in a cross reference titration ("chessboard method"). A distinct crossreaction was observed when anti-icterohaemorrhagiae - and anti-bratislava-immunsera reacted with several serotypes out of the "interrogans complex". But only a weak crossreaction was found when both sera reacted with the serotyp patoc from the "biflexa complex". The evaluation of the indirect immunofluorescence test was complicated by a streaky background of fluorescence. The agargeldiffusion tests (Ouchterolony) exhibited four, three and two precipitation bands according to the conbination of antigens and immunsera.

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