|Values are valid only on day of printing.|
The Venereal Disease Research Laboratories (VDRL) antigen and spinal fluid are mixed on a 180 RPM rotator. The antigen, a cardiolipin-lecithin coated cholesterol particle, flocculates in the presence of reagin. (U.S. Department of Health, Education and Welfare, National Communicable Diseases Center, Venereal Disease Program: Manual of Tests for Syphilis, Centers for Disease Control, Atlanta, GA, 1969)
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