• 1 January 1976
    • journal article
    • research article
    • Vol. 26 (3), 425-430
Abstract
A modified 125I-labeled DNA-binding test was developed. Using an anionic detergent, 0.025% sodium dodecyl sulfate, the non-specific binding of DNA by basic proteins was completely eliminated, while the specific binding of DNA by anti-DNA antibodies was not interfered with. The level of DNA-binding activity in normal human sera was decreased in the modified DNA-binding test, while its sensitivity was similar to that of the Farr assay in presence of sera from SLE [systemic lupus erythematosus] patients.