alpha - degradation of hemoglobin -> green pigmentation around colonies
beta - gross lysis of RBC -> clear ring around colonies
gamma - no color changes (nonhemolytic)
Cell wall polysaccharide - C-carbohydrate (linked covalently to peptidoglycan
Lancefield classifies (mostly beta-haemolytic strep) into group A to U.
Important groups -
Group A - strep pyogenes (beta-hemolytic)
Group B - strep agalactiae (beta-hemolytic)
Group D - strep bovis (alpha or gamma-hemolytic)
Other - strep pneumoniae (alpha-hemolytic)
Other - strep mutans (alpha or gamma-hemolytic)
Things to revise/add later:
Bibliography: LWW microbiology
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Created | 20040322 |
Updated | 20040329 |