[The effectiveness of immunological methods in the diagnosis of leptospirosis].

The effectiveness of Leptospira antigenic erythrocyte diagnosticum increases 4- to 8-fold due to the preliminary activation of erythrocytes and Boivin's antigen with 0.001-0.002 M solution of potassium periodate.

[A method of rapid indication of an antigen].

A simple and sensitive method for rapid detection of an antigen is offered. 0.025 ml of antiserum is placed on the slide, 0.