[Some properties of cytophil antibodies against the O-antigen of Salmonella abortusovis].

Boyden's multilayer method was made use of to study the resistance to mercaptoetanol, and to temperature effects as well as the fixation capacity of macrophages of other animal species as regards cytophil antibodies from sera of guinea pigs immunized with a live culture of Salmonella abortusovis. It was found that they are resistant to heating at 56 degrees C for 30 minutes, to mercaptoetanol, and are not fixed by murine macrophages. Discussed is the biologic value of such type of antibodies.