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WEBSITE OF THE STATE OF SOUTH DAKOTA DEPARTMENT OF HEALTH
Doneen Hollingsworth, Secretary of Health

Bacillus anthracis — Colony Characteristics

Sheep blood agar (SBA)

Colonies are nonhemolytic, flat or slightly convex with irregular edges and ground-glass appearance. There are often comma shaped projections from the colony edge producing a “Medusa-head” colony.

sheep blood agar
Colonies have a sticky consistency when manipulated with a loop. colony consistency
No growth on MacConkey agar.  
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