Antigenic analysis of several species of
Saccharomyces were carried out with particular refferences to those of genus
Candida. It was found that antigenically
S.fragilis and
S.marxianus were the same to
C.pseudotropicalis, and
S.ellipsoideus and
S.cerevisiae, to
C.robusta. These results were repoted precisely in previous paper. This paper deals with the other four species of
Saccharomyces, i. e. S.willianus, S.uvarum, S. delbrueckii, and
S.bisporus. Experiments were performed with siide aggultination reaction using the mono-specific antisera and adsorbed sera and investigated about heat-stable and-labile antigens of the species. Results obtained were summarized as follows :
These results show that
S.willianus has the same atigenic structure to
S.cerevisiae and
C.orbusta and
S.uvarum has also the same antigens to these organisms except lacking heat-labile antigens.
Thus it seems to be desirable that the classification of yeasts should no be done by the biochemical activities, but by the serological characteristics.
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