抄録
The present studies provide an evidence suggesting that the occurrence of acid agglutination is one of the remarkable characteristics of the fimbriate strains of E. coli, Sh. flexneri or S. marcescens, and that the fimbriae may significantly influence the net charge of the bacterial surface. Three types of pattern of acid agglutination are recognizable and may be interpreted as presenting the qualitative and quantitative differences in the constituents of the fimbriae or in the antigenic structure.