[Characteristics of the immunogenic properties of cholerogen-anatoxin according to gel precipitation reactions and quantity of reducing sugars].

The authors suggest the use of determination of the titre of the diffuse precipitation in gel test with the O-cholera serum, and the content of reducing sugars after Hagedorn-Jensen to characterize the antibacterial properties of the cholerogen-toxoid preparation along with (or instead of) the active mouse protection (AU50) test used earlier, because a close correlative association was established between them. No correlative association proved to exist between the vibriocidal antibody titre of the sera of rabbits immunized with the cholerogen-toxoid and the mouse protection (AU50) test or the titre of the precipitation in gel test in the preparation.