Effectively isolate Gram-positive organisms from clinical samples using Thermo Scientific™ Columbia CNA Agar with Sheep Blood, a selective microbiological medium that includes colistin and nalidixic acid to inhibit gram-negative bacilli
Columbia CNA Agar has traditionally been used to identify staphylococci and streptococci
The addition of sheep blood to the medium allows distinct identification of S
pneumoniae through the production of clear alpha-haemolysis
Columbia CNA Agar with Sheep Blood contains antibiotics to inhibit S
albus and Micrococcus species as well as Gram-positive and Gram-negative rods
It suppresses growth of Proteus, Klebsiella and Pseudomonas species while permitting unrestricted growth of S
aureus , haemolytic streptococci and enterococci
This medium enables important Gram-positive cocci to be recognised more readily and isolated easily from the mixed bacterial populations contained in many clinical specimens and foods
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