Abstract
In a previous report antigenic structures of the six species of the genus Rhodotorula were indicated through the antigen analyses.
The standard strain used for antigen analyses were authentic, but the antigenic structure of one species was derived from the single strain. Therefore, five stock cultures other than the standard strains and sixty-one strains which were isolated from oral cavities and from stools, were collected by the author. An existence of antigens was examined by the slide agglutination method with monospecific or absorbed antisera based on the antigenic structures of the genus Rhodotorula and the isolates were identified by serology. Then biological characteristics of the strains were examined by the usual methods, and species identifications were established independently on the basis of the biological characteristics. Both identifications correspond each other except two strains. Consequently, the antigenic structures will serve as the reliable basis of the classification of the genus Rhodotorula.