Columbia CNA Agar | 合法醫療器材資訊網

ColumbiaCNAAgar-Selectivesolidmediaformicrobiology.ColumbiaAgarBaseisanutrient-richformulacontaining5%defibrinatedblood,whichprovides​ ...

Columbia Agar Base is a nutrient-rich formula containing 5% defibrinated blood, which provides more nutrients and the ability to exhibit hemolytic reactions. Columbia Blood Agar Base is used as a base for the preparation of blood-containing media and in selective media preparations where various combinations of antimicrobial agents are used as additives. Columbia C.N.A. Agar Base is prepared with the same formula as Columbia Agar Base with the addition of 10 mg/L colistin and 15 mg/L nalidixic acid to inhibit the growth of gram-negative bacteria and to support the growth of staphylococci, hemolytic streptococci and enterococci when supplemented with 5% blood. Biopeptone and tryptose B promote the luxuriant growth of microorganisms and the visualization of good hemolytic reactions. Sheep blood allows the detection of hemolytic reactions and provides the factor X necessary for the growth of many bacterial species. Hor...