Neomycin Blood Agar

  • Neomycin Blood Agar based on Columbia Agar enriched with 7% Horse Blood this formulation has been modified to include Neomycin, which will inhibit most gram-positive and gram-negative aerobes, making it suitable for use as a selective medium for the isolation of many anaerobes.
  • Neomycin blood agar is also commonly used as a selective medium for the isolation of vancomycin resistant enterococci from faeces.
  • Example: Bacteroides fragilis and Clostridium perfringens show grey colonies while Escherichia coli is inhibited.
Blood Agar with Neomycin

Blood Agar with Neomycin

Grey colonies of Bacteroides fragilis

Grey colonies of Bacteroides fragilis

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