Half-Fraser broth is a selective enrichment broth for the identification and isolation of Listeria spp., primarily from food and environmental samples.
The antibiotics, nalidixic acid and acriflavine, are already included in the formulation so only ferric ammonium citrate (LS5004) need be added to make the complete Half-Fraser broth.
The peptones provide carbon, nitrogen and vitamins, sodium chloride provides osmotic balance and the phosphate bu
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