A very nutritious general-purpose medium based on Columbia Agar Base enriched with 7% Sheep Blood, suitable for the isolation of most organisms including most fastidious anaerobes of clinical significance. Many workers claim that β haemolysis is more readily apparent, particularly in group A streptococci, when Sheep Blood is used in place of Horse Blood.
Columbia Agar Base with 7% Defibrinated Sheep Blood
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Product Description
| Organisms | Ref. No | Result |
| Bacteroides fragilis | NCTC 9343 | Small grey colonies |
| Escherichia coli | NCTC 12241 | Grey colonies |
| Streptococcus pyogenes | NCTC 12696 | White colonies with β-haemolysis |
