Abstract
For radioimmunoassay of the catechol estrogens, four hapten-bovine serum albumin (BSA) conjugates were prepared from 6-oxo-2-hydroxyestradiol 6-(0-carboxymethyl)oxime, 2-hydroxyestradiol 17-hemisuccinate, 6-oxo-4-hydroxyestradiol 6-(0-carboxymethyl)oxime and 4-hydroxyestradiol 17-hemisuccinate by coupling with BSA, employing the mixed anhydride method. The antisera elicited in rabbits by immunization with these antigens showed high affinity and specificity for 2-hydroxyestradiol or 4-hydroxyestradiol with cross-reactivities to a few structurally related estrogens. The specificity of antisera obtained is discussed in relation to the site of attachment of the hapten to BSA.
Published Version
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