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Determination of the serological sex-specific (Sxs) antigen (“H-Y antigen”) in birds and mammals using high-titer antisera and a sensitive urease ELISA


A rapid, sensitive, and reproducible enzyme-linked immunosorbent assay (ELISA), for the detection of the serological sex-specific (Sxs) antigen (formerly termed H-Y antigen; see Introduction), is described. This assay uses bovine lestes extract as the solid phase antigen, and high-titer anti-Sxs antisera and a urease-conjugated anti rat-IgG as the first and second antibody respectively. The urea containing substrate causes a pH shift in a positive reaction, which in turn is visualized by the use of bromocresol purple as a pH indicator. The method, and some representative applications of it, are described in detail.

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Correspondence to Ulf H. Wiberg.

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Bradley, M.P., Ebensperger, C. & Wiberg, U.H. Determination of the serological sex-specific (Sxs) antigen (“H-Y antigen”) in birds and mammals using high-titer antisera and a sensitive urease ELISA. Hum Genet 76, 352–356 (1987).

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  • Internal Medicine
  • Urea
  • Metabolic Disease
  • Immunosorbent Assay
  • Positive Reaction