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, GT; Ploos van Amstel, HK; Hessing, M; Reitsma, PH; Bertina, RM; Bouma, BN (Thromb Haemost, 1992)