Abstract: The present invention provides crystals of human Factor VIII, in particular, a B-domain deleted human Factor VIII, and its three-dimensional structure. The present invention also provides the structural information of Factor VIII, and methods for identifying compounds that modulate Factor VIII activity, for determining structures of Factor VIII homologs or analogs, and for designing drug candidates for the treatment of hemophilia based on the structural information.

Abstract: Substantially pure conopeptides containing &ggr;-carboxyglutamic acid are disclosed.

Abstract: A method of isolating a protein from a mixture containing the protein, the method including providing an antibody immobilized on a solid support, which antibody is reactive with the protein complexed with a ligand and substantially unreactive with the protein not complexed with the ligand; contacting the mixture, in the presence of the ligand, with the immobilized antibody to bind the protein, complexed with the ligand, to the immobilized antibody to form an immune complex; and contacting the immune complex with a compound having a binding affinity for the ligand higher than the binding affinity of the protein for the ligand, to release the protein from the immobilized antibody.

Abstract: The present invention relates to a method of inhibiting (reducing or preventing) the interaction of a cell which bears a surface molecule that interacts with a ligand comprising a Le.sup.x core with its target ligand by contacting the cell with an inhibitor comprising a Lewis x (Le.sup.x) core. The invention further relates to a method of inhibiting (reducing or preventing) the interaction or adhesion of endothelial cells and/or platelets with leukocytes (i.e., white blood cells), especially with nonlymphocytic leukocytes such as neutrophils and monocytes, by contacting the endothelial cells and/or platelets with an inhibitor comprising a Le.sup.x core under conditions whereby adhesion is inhibited.

Abstract: Antibodies which form immune complexes with human native prothrombin only, in the presence of mixtures of human native prothrombin and human abnormal prothrombin as well as antibodies which form antibody antigen complexes with human abnormal prothrombin in the presence of such mixtures have been obtained. Immunoassay techniques are used for qualitative and quantitative determinations of these antigens in human plasma or serum. Unique methods of obtaining the antibodies are described including obtaining antibodies to native prothrombin by dissociation of antigen antibody complexes formed in the presence of calcium ions with a material having a greater affinity constant for binding with calcium ions than does prothrombin. Dissociation of the complex in this manner yields human native prothrombin antibodies which are specific and non-reactive with human abnormal prothrombin.

Abstract: An antibody reactive with activated human platelets, and substantially unreactive with resting human platelets, with the azurophilic granules of monocytes, and with granulocytes.

Abstract: Antibodies which form immune complexes with human native prothrombin only, in the presence of mixtures of human native prothrombin and human abnormal prothrombin as well as antibodies which form antibody antigen complexes with human abnormal prothrombin in the presence of such mixtures have been obtained. Immunoassay techniques are used for qualitative and quantitative determinations of these antigens in human plasma or serum. Unique methods of obtaining the antibodies are described including obtaining antibodies to native prothrombin by dissociation of antigen antibody complexes formed in the presence of calcium ions with a material having a greater affinity constant for binding with calcium ions than does prothrombin. Dissociation of the complex in this manner yields human native prothrombin antibodies which are specific and non-reactive with human abnormal prothrombin.