[The study on SDS-PAGE technic classification of the whole protein of oral bacteria]

Oral flora was classificated by SDS-PAGE combined with Comassie blue staining and silver staining. The results showed that each species of the test oral bacteria expressed its specific electrophorectic protein pattern, the way of sample preparation, staining did not change the protein pattern. This indicated that SDS-PAGE could be used to classificate oral flora. The protein pattern was more obvious among the genus than that of within the genus. This showed that different relationship was among the bacteria.