Expression and characterization of recombinant human protein S in heterologous cells - studies of the interaction of amino acid residues leu-608 to glu-612 with human C4b-binding protein - Chang, G T; Ploos van Amstel, H K; Hessing, M; Reitsma, P H; Bertina, R M; Bouma, B N (Thromb Haemost, 1992)