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3. SAM 610: Supplemental Assay Method for Potency Assay of Leptospira interrogans serogroup icterohaemorrhagiae Bacterins. As Prescribed by: 9 CFR Standard Requirement 113.102, 2013. Available at: 〈http://www.aphis.usda.gov/animal_health/vet_biologics/publications/610.pdf〉.
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