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GC Agar (Powder)


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With addition of supplements and hemoglobin an enriched medium for growth of fastidious bacteria.
Catalog #G2023
Various workers led to the development of an agar medium for the cultivation of Neisseria sp. Carpenter et al. increased the recovery time of Neisseria sp. by reducing the agar content. The enrichment of the medium with hemoglobin and yeast concentrate also greatly improved the growth of Neisseria sp. Heated hemoglobin releases hemin which is a growth factor for fastidious microorganisms such as Haemophilus sp. Cofactors, vitamins and nicotinamide adenine dinucleotide (required by Haemophilus sp.) are present in the chemical enrichment. Chocolate Agar is composed of GC Agar Base, hemoglobin and enrichment. Thayer-Martin Agar is Chocolate Agar with the addition of vancomycin to suppress Gram positive microorganisms, colistin to suppress Gram negative microorganisms and nystatin to inhibit yeast. Anisomycin is substituted for nystatin in Martin-Lewis agar.
Storage and StabilityStore powdered media at RT. Opened bottles should be capped tightly and kept in a dark, low humidity environment. Prepared media should be kept at 4°C and used within a short period of time.
Microbiological Analysis
Haemophilus influenza ATCC 10211Good Growth
Neisseria gonorrhoeae ATCC 9793Good Growth
Neisseria gonorrhoeae ATCC 43070Good Growth
Neisseria meningitidis ATCC 13090Good Growth
Streptococcus agalactiae ATCC 13813Good Growth
Streptococcus pneumoniae ATCC 6305Good Growth
Light beige to beige, homogeneous, free flowing powder.
pH (3.6%)
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Alternate namesGC Medium Base

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