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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 9 - Animals and Animal Products |
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Chapter I - Animal and Plant Health Inspection Service, Department of Agriculture |
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SubChapter E - Viruses, Serums, Toxins, and Analogous Products; Organisms and Vectors |
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Part 113 - Standard Requirements |
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Standard Procedures |
§ 113.32 - Detection of Brucella contamination.
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§ 113.32 Detection of Brucella contamination.
The test for detection of Brucella contamination provided in this section shall be conducted when such a test is prescribed in an applicable Standard Requirement or in a filed Outline of Production for the product.
(a) One ml of the minced tissue used as the source of cells or 1 ml of the extract of the tissue prior to the addition of antibiotics, diluent and stabilizer, shall be inoculated onto each of three tryptose agar plates and incubated in a 10 percent CO2 atmosphere at a temperature of 35-37 °C for at least 7 days.
(b) If colonies are identified as Brucella, the biological product is unsatisfactory.
(c) If colonies suspicious of Brucella are observed but cannot be identified as a Brucella species, either
(1) The biological product shall be regarded as unsatisfactory and destroyed; or
(2) Further subculture or other procedures shall be carried out until a positive identification can be made.
[38 FR 29888, Oct. 30, 1973]