Abstract: A hybridoma which produces monoclonal antibodies having a high affinity and selectivity for digoxin is produced by immunizing mice with digoxin, fusing the spleen cells from the treated mice with mice myeloma cells, separating hybrids from non-fused cells, selecting the hybrids which produce monoclonal antibodies directed against digoxin and isolating the hybrids.

Abstract: Monoclonal anti-human protein C antibodies which bind to the heavy chain of protein C are disclosed.

Abstract: Somatic cell hybrids of purely human origin are described that are suitable fusion partners for producing hybridomas by fusion with antibody producing cells, which hybridomas are stable and continuous.

Abstract: A monoclonal antibody recognizing an antigenic determinant on activated human B-cells, the antigenic determinant being characteized in that it is a protein distinct from B-LAST-1 and BB-1, the antibody being substantially unreactive with unactivated human B-cells.

Abstract: At least two antigens in a sample may be detected using an immunometric dual sandwich assay containing an effective amount of at least one monoclonal antibody against each antigen, which antibodies are separately conjugated with the same or different signal moieties as labels, and an effective amount of at least one unlabeled monoclonal antibody against each antigen which unlabeled antibodies are immobilized on a single support. Preferably the antibodies are all products of different cell lines and the antigens are prostatic acid phosphatase and prostate antigen.

Abstract: A hybridoma for production of monoclonal antibodies specific for mouse interleukin-2, but which antibodies do not significantly cross-react with human or rat interleukin-2. The hybridoma is a fusion product of a mouse myeloma cell line and from a rat immunized with supernatant from a mouse T cell line.

Abstract: A novel subunit vaccine employing glycoprotein A of human cytomegalovirus or fragments thereof is provided. The vaccine is particularly suitable for inoculation of immunosuppressed individuals and women of childbearing age to inhibit the transmission of hCMV to the fetus.

Abstract: A process of preparing a hybridoma secreting oncofetal-specific monoclonal antibodies, which comprises: (a) immunizing an animal with immunizing amounts of a non-proliferating syngeneic mid-gestation fetal cell preparation; (b) isolating immunized animal lymphocytes; and (c) fusing the lymphocytes under appropriate fusion conditions with an immortalizing cell line to thereby obtain the hybridoma.

Abstract: Disclosed herein is a monoclonal antibody of the IgM class which reacts with a glycoprotein antigen having a molecular weight by gel filtration of 1,000,000 or higher, the antigenic determinant to be recognized being a sugar chain with a sialic acid residue at the end thereof. The monoclonal antibody has the following characteristics: (1) a reactivity with human cancers of stomach, large intestine, pancreas, breast, lung, biliary duct, uterus and esophagus; (2) a reactivity with normal human submaxillary gland, proximal renal tubule, bronchial gland, squamous epithelial corneum, pancreatic Langerhans' islands, liver cell membrane and duodenal gland; (3) a reactivity with human intestinal metaplastic gastric mucosa; and (4) a non-reactivity with normal human prostate gland, biliary duct and pancreatic duct.Also provided in the invention is a method for production of monoclonal antibodies.

Abstract: A single polypeptide antigen that includes the amino acid residue sequence and epitope of a conformation-independent antigenic determinant and the amino acid residue sequence but lacks the epitope of a conformation-dependent antigenic determinant is disclosed as are methods of its manufacture and use and articles of manufacture using the same. The uses of the pre-S(2) region polypeptide encoded by the hepatitis B virus genome as a T cell proliferating agent and as a potentiator for enhancing the humoral immune response of animals that exhibit a low humoral response to an S region-containing immunogen are also disclosed.

Abstract: Interleukin-2 dependent cytotoxic cultured T-cell lines are found to produce .alpha., .beta., and .gamma. interferon, as well as interleukin-2, when stimulated by mitogenic or antigenic agents.

Abstract: The subject invention provides a means for the immunological detection of an entire class of microorganisms in clinical samples. The detection is accomplished by reaction of the clinical sample iwth a class-specific immunological reagent. This reagent is an antiserum either monoclonal or polyclonal in nature, and the detection is based upon reaction of the antiserum with an antigenic determinant which is shared among all members of the detectable class of microorganisms. The presence of the resulting immunological reaction product (e.g. the antigen-antibody complex) may be detected by well-known immunological detection-systems.

Abstract: The invention relates to novel polypeptide of the formula ##STR1## wherein X is a bond, or a peptide or amino acid residue 1 to 16 amino acids counting from the C terminus of the peptide chain of ##STR2## and Y is a peptide or amino acid residue having 1 to 5 amino acids counting from the N terminus of the peptide chain of ##STR3## and conjugate between the same and a carrier protein, as well as hydridoma and monoclonal antibody derived by the use of the polypeptide or the conjugate, and a method of detecting and of purifying human gamma-interferon using the antibodies.

Abstract: Production of anti-H-Y hybridoma cell lines, and the use of the antibodies to determine the presence of H-Y antigen to indicate the sex of the proband inclusive of fetus, newborn and adult humans.

Abstract: A method for preparing hybrid cell lines (hybridomas) which secrete monoclonal antibody which is group-specific to epizootic hemorrhagic disease virus antigen and which does not react to antigenically-related bluetongue virus antigen is disclosed. The antibody identifies EHDV in infected cell cultures with immunofluorescence and provides a means for ready diagnosis of EHDV in animals.

Abstract: Monoclonal receptors that immunologically bind to human apolipoprotein A molecules, particularly apo-A-I and apo-A-II, are described as are their methods of use and articles of manufacture containing them.

Abstract: A monoclonal antibody 4A produced by a human-mouse hybridoma cell line is described. In the presence of complement, 4A subsets both cytotoxic and helper T cells creating a diagnostic tool in blood biochemistry.

Abstract: Disclosed is an assay procedure for detecting and quantifying interferon epsilon, a new composition of matter having selective antiviral activity on epithelial cells. The assay comprises incubating a preparation believed to contain interferon epsilon with human keratinocyte cells and with human fibroblast cells followed by a virus challenge. The presence of interferon epsilon is indicated if the preparation has antiviral activity on the keratinocytes but no detectable activity on the fibroblasts. The titer of the preparation may be determined by serially diluting it, incubating the dilution with subcultures of keratinocytes, challenging the subcultures with a virus, observing the viability of cells in the cultures, and comparing the results with a standard.

Abstract: A non-human, mammalian monoclonal receptor produced and secreted by a hybridoma having the ATCC accession number HB 8568 and methods of preparing and using same, as well as diagnostics utilizing the receptor are disclosed. The monoclonal receptor reacts with cells such as human neuroectodermal tumors having ganglioside GD.sub.2 antigen expressed on their cellular membrane surfaces.

Abstract: Methods and compositions are provided for producing monoclonal antibodies capable of distinguishing between antigenic aggregates, which are differentiated by one or a small number of antigenic determinants. The method involves immunization of a mammal to produce spleen cells which are fused with a cell line which is stable in vitro. The hybridized cells are then dispensed into culture wells at a density level which encourages the production of one colony per well. Autologous antigenic aggregates are employed for screening to distinguish the antibodies which discriminate between the antigenic aggregates. Particularly, mice are hyperimmunized with a homogeneous population of T-cells, the immunized mice killed and the spleens removed. The spleen cells are fused with mouse myeloma cells and the resulting hybrids plated at a relatively low density in culture wells. Plates containing fewer than 30% hybrid positive wells are found to have primarily one colony per well.

Abstract: Two novel hybridoma cell lines, ATCC #HB-8397 and ATCC #HB-8398 produce monoclonal antibody monospecific to a single determinant shared by a set of three closely related cytoplasmic antigens of Candida albicans. The antigens have molecular weights of 120-135 Kd, 48-52 Kd, and 35-38 Kd. The hybridomas are formed by fusing splenocytes from immunized BALB/c mice with SP2/O-Ag 14 myeloma cells. Monoclonal and monospecific, polyclonal antibodies to these cytoplasmic antigens find application in the immunodiagnosis of Candida infections.A procedure is provided for preparing partially purified cytoplasmic antigen of pathogenic Candida species for administration to splenocyte-donating mice. Also provided is a method for the biochemical purification of cytoplasmic antigen of a pathogenic Candida species used for the preparation of monoclonal and monospecific, polyclonal antisera thereto.

Abstract: A hybrid cell formed by the fusion of a mouse spleen cell with a mouse myeloma cell secretes an IgM class antibody. The antibody is useful as a preparative reagent in the isolation of three proteins, molecular weights 45,000, 49,000 and 53,000, from the parasite Trichinella spiralis and is also useful as a direct diagnostic reagent is a competitive serodiagnostic test.

Abstract: The present invention discloses a new line of endothelial cell of adrenal medullary origin capable of producing blood clotting Factor VIII:C. A method of isolating and culturing said cell line has also been disclosed. Factor VIII:C is useful in treating hemophilia.

Abstract: Chromatographic procedures are individually and jointly applied to the rapid and efficient isolation of biologically active proteins and especially glycoproteins such as recombinant erythropoietin present in the medium of growth of genetically transformed mammalian host cells. Illustratively, recombinant EPO is isolated from culture fluids by reverse phase chromatography employing a C.sub.4 or C.sub.6 column and elution with ethanol. Recombinant erythropoietin may also be purified by anion exchange chromatography employing, e.g., a DEAE resin, with preliminary selective elution of contaminant materials having a lower pKa than erythropoietin from the resin under conditions mitigating against acid activated protease degradation. Practiced serially, the two chromatographic procedures allow for high yields of biologically active recombinant erythropoietin from mammalian cell culture media.

Abstract: Mouse monoclonal antibodies to several cell antigens of human ovarian, cervical and endometrial carcinomas have been produced and characterized. The distribution of the antigens was determined by mixed hemagglutination assays on 153 normal and malignant cell cultures of various types, and by immunoperoxidase staining of frozen sections of 27 normal adult and 24 fetal tissues. five monoclonal antibodies representative of five classes of mAb raised to restricted ovarian, cervical and endometrial cells were tested extensively producing mAb reactive with cancer but not normal cells. One such mAb, MF116 was readily detected in the spent culture medium of metabolically radiolabeled cells. These antibodies, reacting with relatively restricted cell surface antigens, are useful in the analysis of epithelial cell differentiation, in cancer diagnosis and therapy and in tissue typing of normal or abnormal cells.

Abstract: A human T cell hybridoma comprising the product of:(A) fusion of:(i) a T cell from a patient with ARC or AIDS, wherein said T cell secretes an SSF capable of specifically inhibiting T cell-dependent responses while leaving other immune functions intact, and(ii) a human T cell line,followed by(B) selection from the product of (A) of a human T cell hybridoma which secretes an SSF capable of specifically inhibiting T cell-dependent responses while leaving other immune functions intact.

Abstract: Monoclonal anti-idiotype antibodies against cell surface Ig of human B-cell tumors, labeled conjugates of such antibodies, immunotherapeutic compositions containing such antibodies, and a process for making such antibodies. The nodular lymphoma of a patient treated with a monoclonal anti-idiotpye antibody against the cell surface IgM of the patient's tumor went into complete remission.

Abstract: A method for isolating the fusion product of two cell populations is disclosed. The method involves the introduction of a specific antitoxin into cells of one population while introducing a second specific antitoxin into cells of the second population. After fusing cells of the first population with those of the second population, the fusion product may be selectively isolated on a medium containing an appropriate amount of both first and second toxins. For some applications, it may be appropriate to introduce an antitoxin into only one of the cell populations and isolate the fusion product on a media containing only one toxin.

Abstract: A serum-free, synthetic tissue culture media is described which is completely defined chemically. The two media described can be used for growing all types of human or animal cell lines in tissue culture without addition of any protein, amino acids, hormones, sources of energy, salts, vitamins, etc. with normally used procedures and methods. The media do not require any supplementation with fetal calf serum to support growth of neural cells.

Abstract: Monoclonal antibodies specific for a protein associated with a lung surfactant complex, decreased levels of which are related to respiratory distress syndrome, are disclosed. The antibodies are useful for prediction and diagnosis of respiratory problems in newborns.

Abstract: The present inventiona is directed to a mammalian serum-originated growth factor-containing composition useful in cell cultivation. The composition of the present invention is substantially free of active microorganisms and other harmful substances which would otherwise interfere with cell cultivation. Preferably the composition of the present invention is totally free of contaminant microorganisms, i.e., is sterile.The present invention is also directed to a method of producing the composition of the invention. One step of this method comprises the inactivation of any contaminant microorganisms present in the starting serum. Another step comprises the salting out and desalting of the starting serum to obtain a fraction of the serum which contains the desired cell growth factor. Either step may be conducted first.

Abstract: A method for producing continuous B lymphocyte cell lines and monoclonal antibodies by such lines is provided. DNA isolated from neoplastic cells is introduced into stimulated lymphocytes. Individual cells that have been transformed by the added DNA and that produce antibodies are clonally expanded. Cultures of these continuous cells are employed to produce monoclonal antibodies.

Abstract: A cell system is disclosed for the reproducible detection and isolation of human T-lymphotropic retroviruses (HTLV-family) with cytopathic effects (HTLV-III) from patients with the acquired immune deficiency syndrome (AIDS), pre-AIDS and in healthy carriers. One neoplastic aneuploid T-cell line derived from an adult with lymphoid leukemia, and termed HT, was susceptible to infection with HTLV-III, which is transformed and provides T-cell populations which are highly susceptible to and permissive for HTLV-III, and convenient for large scale production, isolation, and biological detection of the virus. Other operational neoplastic T-cell lines which are positive for OKT4 marker, e.g., Molt 3, CEM, Ti7.4 and HUT78, can produce HTLV-III in a large amount and retain its unlimited capability for growth.

Abstract: A helper cell for providing retrovirus protein which is required by a normally replication incompetent recombinant retrovirus gene sequence in order to replicate is disclosed. In one embodiment there is a eukaryotic host cell, a first retrovirus gene sequence in the cell which has a helper portion coding for a retrovirus protein and which is capable of expressing the retrovirus protein, and a defective portion which renders the gene sequence replication imcompetent. In this embodiment, there is also a second retrovirus gene sequence in the cell having a defective retrovirus portThis invention was made with Government support under NIH Grant Nos. P01 CA 22443, P30 CA0 7175 and T32 CA0 9075 awarded by the Department of Health and Human Services. The Government has certain rights in this invention.

Abstract: The preparation and use of monoclonal antibodies to human renal tumor cells is described. The monoclonal antibodies bind to glycoproteins of 160Kd, 120Kd and 115Kd, a glycolipid, a HLA heavy chain, group A blood and group B blood antigens.

Abstract: Successive layers of guinea pig epidermis display discrete antigenic markers that are recognized by a selected panel of five monoclonal antibodies produced by hybridomas resulting from immunization of mice with suspensions of dissociated viable guinea pig epidermal cells. Antigen to Gpsk-1 marks the basement membrane, which membrane is probably produced by basal cells. Antigen to Gpsk-2 is expressed by basal and suprabasal cells. Antigens to both Gpsk-3 and Gpsk-4 occur on the spinous and overlying layers but are distinguished by differences in their representation on certain non-epidermal cell types and on other epithelia. Antigen to Gpsk-5 is found on basement membrane and on spinous and overlying granular and horny cells. Antigens to Gpsk-2 through 5 are situated at the cell surface and may recognize integral plasma membrane molecules expressed in differentiative sequence. The five antibodies differ also in their antigenic marker distribution among epithelial as well as other selected tissue types.

Abstract: A human non-secretory plasmacytoid HPRT.sup.- mutant continuous cell line, can be used for the preparation of human-human hybridomas with human B-lymphocytes and separation of the resulting hybridomas from the plasmacytoma cell line by growth in HAT media, or by fluorescence activated cell sorting, or both.

Abstract: A cell system is disclosed for the reproducible detection and isolation of human T-lymphotropic retroviruses (HTLV-family) with cytopathic effects (HTLV-III) from patients with the acquired immune deficiency syndrome (AIDS), pre-AIDS and in healthy carriers. One neoplastic aneuploid T-cell line derived from an adult with lymphoid leukemia, and termed HT, was susceptible to infection with the new variants of HTLV, which are transformed and providing T-cell populations which are highly susceptible and permissive from HTLV-III, and convenience for large scale production, isolation and biological detection of the virus.

Abstract: The present invention provides an interleukin-2 composition which comprises human serum albumin, a reducing compound or a combination thereof and is adjusted as showing pH of 3 to 6 as a solution. The composition of the present invention is characterized in that interleukin-2 activity is minimized during storage and in the processes of freezing and lyophilization.

Abstract: A panel of monoclonal antibodies, produced from human bladder tumors as immunogen, is used to diagnose the presence of transitional cell carcinoma in patients. The panel is also used to identify and differentiate low grade non-invasive papillomas from invasive life-threatening transitional cell carcinomas, thereby enabling decisions as to the extent of bladder surgery. These mAbs can also be used as a panel for tissue typing of normal and abnormal cell specimens.

Abstract: Method of forming an antibody producing hybridoma cell line by fusing a myeloma cell line with splenocytes derived from BALB/c mice immunized with human astrocytoma tumor cells, the hybridoma cell line formed, and the monoclonal antibodies generated by said hybridoma cell line. A method of phenotyping astrocytoma tumor cells comprising determining the reaction of said cells to various monoclonal antibodies to astrocytoma tumor cells is also provided.

Abstract: Hybrid cell line for production of monoclonal antibody to an antigen found on normal human cytotoxic and suppressor T cells. The hybrid is formed by fusing splenocytes from immunized CAF.sub.1 mice with P3X63Ag8U1 myeloma cells. Diagnostic and therapeutic uses of the monoclonal antibody are also disclosed.

Abstract: Monoclonal anti-ornithine decarboxylase antibody is produced by cell hybrids between hypoxanithine phosphoriboxyltransferase deficient myeloma cells and spleen cells derived from an animal previously immunized with ornithine decarboxylase. By means of immunoaffinity chromatography using cyanogen bromide-activated agarose coupled with the antibody, ornithine decarboxylase in animal cell extracts can be highly purified in high yield.

Abstract: A method is provided for the regeneration of cultivated tomato plants from protoplasts. The protoplasts are extracted from a donating plant which has been substantially isolated from its source of endogenous hormones and grown in an artificial medium which is substantially hormone-free, and thereafter cultured in substantially similar media to form callused cell colonies and shoots which are similarly grown to form rooted, mature plants.

Abstract: By careful screening and mutation, a human-murine hybridoma suitable as a fusion partner for immortalizing an antibody-secreting B cell has been generated. The trioma fusion products of this immortalizing partner are stable producers of human monoclonal antibodies. A trioma which produces monoclonal human anti-varicella zoster is disclosed.

Abstract: Compositions for the prevention of, and for the treatment of autoimmune diseases which comprise as active ingredient membrane material shed from autoimmune T lymphocytes, or T lymphocytes activated by a pressure application and release process. There is also provided a process for obtaining such active materials and for preparing pharmaceutical compositions for these.

Abstract: The present invention relates to processes for inserting DNA into eucaryotic cells, particularly DNA which includes a gene or genes coding for desired proteinaceous materials for which no selective criteria exist. The insertion of such DNA molecules is accomplished by cotransforming eucaryotic cells with such DNA together with a second DNA which corresponds to a gene coding for a selectable marker.This invention also concerns processes for producing proteinaceous materials such as insulin, interferon protein, growth hormone and the like which involve cotransforming eucaryotic cells with DNA which codes for these proteinaceous materials, growing the contransformed cells for production of the proteinaceous material and recovering the proteinaceous material so produced.The invention further relates to processes for inserting into eucaryotic cells a multiplicity of DNA molecules which includes genes coding for desired proteinaceous materials.

Abstract: Hybrid cell line for production of monoclonal antibody to an antigen found on approximately 10% of normal human thymocytes. The hybrid is formed by fusing splenocytes from immunized CAF.sub.1 mice with P3X63Ag8U1 myeloma cells. Diagnostic and therapeutic uses of the monoclonal antibody are also disclosed.

Abstract: The present invention relates to a process for the production of human T-cell growth factor (abbreviated as "hTCGF" hereinafter). More precisely, the present invention relates to an improved process for the mass-production of hTCGF, comprising transplanting human cells capable of producing hTCGF to a non-human warm-blooded animal, multiplying said cells while allowing the cells to receive the nutrient body fluid supplied from the animal, and producing hTCGF in the multiplied human cells. By the practice of the present invention, a much larger amount of hTCGF, i.e., about 2-10-fold or more larger than that obtained by conventional processes, can be easily obtained; thus, hTCGF in an amount sufficient to carry out various clinical treatments can be easily provided by the present invention.

Abstract: A 6-thioguanine-resistant subvariant of the EBV-transformed human lymphoblastoid B cell line WI-L2 is described. The subvariant line, designated LTR228, fuses efficiently with human cells. Human.times.human hybridomas derived from LTR228 that produce monoclonal antibodies against tetanus toxin and blood group A are exemplified.