α-溶血性鏈球菌33 α-hemolytic Streptococci strain

Alpha-hemolytic streptococci (commonly called viridans streptococci) are surrounded by green discoloration resulting from incomplete hemolysis.
The viridans streptococci are typically facultatively anaerobic, nonmotile, non–spore-forming gram-positive cocci that are both catalase and coagulase negative and either α- or γ-hemolytic on blood agar.

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