IMMUNOLOGICAL STUDIES OF THE HUMAN-PLACENTA - FUNCTIONAL AND MORPHOLOGICAL ANALYSIS OF PREGNANCY-ASSOCIATED PLASMA PROTEIN-A (PAPP-A)

  • 1 January 1981
    • journal article
    • research article
    • Vol. 44  (3) , 577-583
Abstract
A blood protein, pregnancy-associated plasma protein A (PAPP-A), was isolated from the plasma of pregnant women. An antiserum to this protein was prepared and used to localize the protein within the placenta by immunofluorescence. It was inconstantly present in the syncytiotrophoblast and intervillous fibrin. Neither antiserum nor antigen exerts a cytotoxic effect on peripheral blood lymphocytes, and neither affected blastogenic responses of lymphocytes to mitogens or in mixed lymphocyte culture reactions.