The immunoglobulins response in rabbit to single antigenic factors of leptospira. Investigations with two serovars from saprophytic leptospira.

The agglutinating antibodies formed after immunization of rabbits with viable leptospira consist of 19S and 7S immunoglobulins. IgM and IgG are formed already earlier in the course of immunization. after a lapse of one month more IgG is found than IgM. The specificity of agglutination with the main antigenic factors is due mainly to IgG.