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Bacteroides fragilis (Veillon and Zuber) Castellani and Chalmers (ATCC® 23745)

Strain Designations: [ICPB 3498, NCTC l0581]  /  Type Strain: no  /  Biosafety Level: 2

Permits and Restrictions

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Deposited As "Sphaerophorus intermedius" Berg and Hovig
Strain Designations [ICPB 3498, NCTC l0581]
Media testing
Quality control strain
Quality control strain for API products
Pleural fluid
Biosafety Level 2

Biosafety classification is based on U.S. Public Health Service Guidelines, it is the responsibility of the customer to ensure that their facilities comply with biosafety regulations for their own country.

Product Format freeze-dried
Storage Conditions Frozen: -80°C or colder
Freeze-Dried: 2°C to 8°C
Live Culture: See Propagation Section
Preceptrol® yes
Type Strain no
Referred to as the type strain of Sphaerophorus intermedius
Medium ATCC® Medium 1490: Modified chopped meat medium
Growth Conditions
Temperature: 37°C
Atmosphere: Anaerobic
Name of Depositor B Hovig
Pleural fluid

Bergan T, Hovig B. A new species, Sphaerophorus intermedius, isolated from empyema. Acta Pathol. Microbiol. Scand. 74: 421-430, 1968. PubMed: 4889145

Zentralbl. Bakteriol., I Abt., Orig. 211: 107-116, 1969.

API Rapid ID 32 A. bioMerieux.

Medical microbiology--Culture media -- Part 4: Transport systems for specimens containing bacteria. Berlin, Germany:Deutsches Institut fur Normung;DIN DIN 58942-4: 2003, 2003

Notice: Necessary PermitsPermits

These permits may be required for shipping this product:

  • Customers located in the state of Hawaii will need to contact the Hawaii Department of Agriculture to determine if an Import Permit is required. A copy of the permit or documentation that a permit is not required must be sent to ATCC in advance of shipment.
Basic Documentation
  1. Anaerobes commercially available media

    Date Updated: 6/11/2019