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Updated: Jun 19, 2026

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

Published on: December 7, 2021

A CLASSIFICATION OF NON-HEMOLYTIC STREPTOCOCCI.

R A Kinsella¹, H F Swift

¹Medical Clinic of the Presbyterian Hospital, Columbia University, New York.

The Journal of Experimental Medicine

|October 30, 2009

Summary

This summary is machine-generated.

Fermentation reactions do not correlate with immunological groupings in non-hemolytic streptococci. Complement fixation reactions reveal a classification based on two distinct elements and varying complexity within these bacterial strains.

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Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR (RS-PCR)

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Published on: November 4, 2016

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Last Updated: Jun 19, 2026

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

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Published on: December 7, 2021

Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR (RS-PCR)

Genotyping of Staphylococcus aureus by Ribosomal Spacer PCR (RS-PCR)

Published on: November 4, 2016

Area of Science:

Microbiology
Immunology
Bacteriology

Background:

Traditional classification of non-hemolytic streptococci using fermentation reactions lacks correlation with immunological properties.
Immunological characteristics are crucial for a robust classification of bacterial species.

Purpose of the Study:

To investigate the potential for classifying non-hemolytic streptococci based on immunological reactions.
To determine if complement fixation reactions can establish a reliable classification system for these bacteria.

Main Methods:

Utilized complement fixation reactions between various non-hemolytic streptococci strains and their corresponding antisera.
Analyzed the presence and complexity of two distinct immunological elements within the bacterial strains.

Main Results:

Demonstrated a lack of correlation between fermentation-based and immunological-based groupings of non-hemolytic streptococci.
Established a classification system for non-hemolytic streptococci using complement fixation reactions.
Identified two primary immunological elements within the group, with strains exhibiting varying degrees of complexity and combinations of these elements.

Conclusions:

Complement fixation reactions provide a valid method for classifying non-hemolytic streptococci.
The classification is based on the presence and complexity of two distinct immunological elements, revealing an inverse relationship between serum fixing capacity and antigen fixation capacity.