Much has been written and said in recent years regarding the classification and significance of the Enterobacteriaceae. These organisms, without a doubt, exceed all other gram-negative bacteria as etiologic agents of disease, and because of their predominance they have deserved the attention that they have received. With the emphasis placed on these fermenting bacteria, however, a dearth of inf...

This review traces the history of the human, nonhemolytic, or viridans, streptococci and describes improvements in their taxonomy wrought by study of their biochemical profiles and analysis of their nucleic acids. The goal was to define species on the basis of genetic relationships and to describe these species by their phenotypic characteristics so that they can be easily identified. This meth...

ABSTRACT Forty bacterial strains isolated from leek blight (Allium porrum) in France and other countries were studied by conventional biochemical methods, serological reactions, numerical taxonomy, DNA-DNA hybridization, and ice nucleation activity, as well as by pathogenicity on leek and other host plants. They were compared with reference strains of Pseudomonas, mainly pathotype strains of P....

Fluorescent antibody techniques, immunochemical methods and progress in areas like gnotobiology and allergy have greatly expanded our knowledge in the serology of bacteria, and serological tools are now often used for classification and identification of bacteria. Thirteen specialists have contributed to this most impressive volume that presents the latest information in the field. A discussion...