Abstract: This invention relates generally to the field of immunology, in particular that of antibodies and antibody productions. More specifically, this invention relates to bispecific antibodies, the hybrid hybridomas which produce them, the parent hybridomas, the production and selection of the hybridomas and hybrid hybridomas, and the purification of the bispecific antibodies. Specific examples relate to bispecific monoclonal antibodies which recognize both the human multi-drug resistance antigen, P-glycoprotein and human Fc.gamma. receptor III (hFc.gamma.RIII). These bispecific antibodies are useful in killing cancer cells.

Abstract: An improvement in in vivo pretargeting methods for delivering diagnostic or therapeutic agents to a target site in a mammal uses a clearing agent that binds to the target-binding site of the targeting species, whereby non-bound primary targeting species is cleared from circulation but the clearing agent does not remove the bound primary targeting species. Anti-idiotype antibodies and antibody fragments are preferred clearing agents. Fast clearance is achieved by glycosylating the clearing agent with sugar residues that bind to the hepatic asialoglycoprotein receptor.

Abstract: A new gene--MN--and proteins/polypeptides encoded therefrom are disclosed. Recombinant nucleic acid molecules for expressing MN proteins/polypeptides and recombinant proteins are provided. Expression of the MN gene is disclosed as being associated with tumorigenicity, and the invention concerns methods and compositions for detecting and/or quantitating MN antigen and/or MN-specific antibodies in vertebrate samples that are diagnostic/prognostic for neoplastic and pre-neoplastic disease. Test kits embodying the immunoassays of this invention are provided. MN-specific antibodies are disclosed that can be used diagnostically/prognostically, therapeutically, for imaging, and/or for affinity purification of MN proteins/polypeptides.

Abstract: Novel compositions are provided that are derived from antigen-binding sites of immunoglobulins having affinity for cancer antigens. The compositions exhibit immunological binding properties of antibody molecules capable of binding specifically to a human tumor cell displaying a MDR phenotype. A number of synthetic molecules are provided that include CDR and FR regions derived from same or different immunoglobulin moieties. Also provided are single chain polypeptides wherein V.sub.H and V.sub.L domains are attached by a single polypeptide linker. The sFv molecules can include ancillary polypeptide moieties which can be bioactive, or which provide a site of attachment for other useful moieties. The compositions are useful in specific binding assays, affinity purification schemes, drug or toxin targeting, imaging, and genetic or immunological therapeutics for various cancers.

Abstract: The present invention relates to monoclonal antibodies specific for a cell receptor specific for human stem cell factor (hSCF) as well as pharmaceutical compositions containing such monoclonal antibodies and uses of such monoclonal antibodies.

Abstract: This invention provides chimeric molecules useful for killing tumor cells bearing IL13 receptor(s) (IL-13R). The molecules comprise a cytotoxic molecule attached to a targeting molecule that specifically binds an IL-13 receptor. Preferred targeting molecules include IL-13 and anti-IL-13R antibodies.

Abstract: The present invention relates to a stabilized protein composition comprising a monomeric protein and a storage-stabilizing amount of sucrose, histidine or glycine, which is sufficient to inhibit aggregation of the protein molecules during freeze/thaw cycles, and methods therefor. More particularly, this invention relates to pharmaceutically-acceptable, single-chain antigen-binding protein compositions having increased frozen-storage stability, especially to freeze/thaw cycles.

Abstract: New purified and isolated bovine coronavirus (BCV) types (II and III) are described which can be used to create new modified live vaccines for administration to cattle in order to confer immunity against virulent wild-type bovine coronavirus infection. Preferably, a multivalent modified live vaccine is provided for oral-nasal administration which includes the known Type I virus and the new Types II and III virus. Hygromycin B has also demonstrated to be effective for suppressing BCV replication and thus can be administered to cattle as a treatment for the chronic disease and to suppress shedding of BCV in cattle feces.

Abstract: The invention describes a metal binding protein capable of forming a coordination complex with a metal cation. The protein contains a sequence of amino acid residues that defines a variable domain of an immunoglobulin light chain having a L1 region and a L3 region, and also contains three contact amino acid residues in the variable domain that participate as ligands for the metal coordination complex.