赤痢菌と共通抗原を有する Proteus菌の研究(II)

抄録

One strain of Proteus vulgaris isolated from the feces of healthy young pupils showed agglutination by Shigella antisera. This agglutinability of the strain has been preserved during these 3 years.
Absorption tests of the immune sera were performed with this proteus strain and Shigella flexneri. These antigens related with the Shigella are very complex, and its analysis is still incomplete. Further investigation of this field is now in progress.
In this paver. it was confirmed that the common antigens in this strain is partially thermolabile and partially thermostable. Some of the antigens are identical with the characteristic antigens of Shigella group; but as H. Mizuno mentioned, specific antigens contained in the strain, not identical with the Shigella, may have a role on common agglutination. Of course, Mizuno's strain (Proteus mirabilis) and the strain in this report (Proteus vulgaris) are not identical each other, but they have common factors which agglutinate the Shigella group B.
The agglutinability of the strain has been preserved well when the bacilli were kept under low temparature (about 4°C), and tends to decrease when they are kept in room temperature.