Abstract: Monoclonal antibodies recognizing the difucosyl-type-2-H antigen on human cells and a method of producing said antibodies are disclosed. The monoclonal antibodies are useful in blood typing and in diagnosis of blood disorders and malignancies involving loss or gain of this H antigen.

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: 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: 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: Hybridomas which produce human monoclonal antibodies are disclosed. The hybridomas are formed by fusing lymphocytes from individuals with various cancers to an immortal cell line, such as a myeloma, from, e.g., a human cell line, or a mouse cell line.

Abstract: The present invention concerns an autologous precipitating antibody and the gp70 pigment-associated antigen on melanoma cells which it recognizes. The antibody is useful in detecting pigmented melanoma cells in excised specimen, serum or urine.

Abstract: A panel of monoclonal antibodies produced from human gastrointestinal tumors as immunogen is used to diagnose the presence of colon cancer. The antibody panel subsets the human gastrointestinal tract in its reactivity vis-a-vis esophagus, stomach, small intestine and colon. The panel is useful as a diagnostic probe for cancer.

Abstract: The present invention concerns novel immunoprecipitating autologous antibodies which recognize the Class 1 gp90 antigen on melanoma cells. These antibodies, optionally tagged with a chromophoric or radioactive label and immobilized on an inert support, may be used to recognize and isolate the gp90 antigen from melanoma cell extracts. Monoclonal antibodies to melanoma may be screened with the gp90 antigen for those which recognize epitopes other than the FD antigenic system.The cell line containing the gp90 antigen which has been cultured in vitro is a source of gp90 antigen for generation of monoclonal antibodies which will be useful in analyzing the gp90 antigen for those epitopes which may be of diagnostic value in immunoassay of melanoma.

Abstract: Mouse monoclonal antibody AbR.sub.24 (Dippold et al., Proc. Natl. Acad. Sci. 77:6114-6118, 1980) has a high degree of specificity for human melanoma cells when tested on viable cultured cells using the PA-MHA serological assay. The antigen detected by this antibody has been isolated from melanoma cells and shown to be G.sub.D3 ganglioside by compositional and partial structural analysis and by comparison with authentic G.sub.D3 by thin layer chromatography (TLC). AbR.sub.24 reacts with authentic G.sub.D3, but not with any other ganglioside tested. Using TLC and reactivity with AbR.sub.24, a wide range of cells and tissues was examined for the presence of G.sub.D3. A new serological assay, termed glycolipid-mediated immune adherence (GMIA), was devised for assaying the reactivity of AbR.sub.24 with gangliosides. Melanomas (cultured cells or tumor tissue) were shown to have T.sub.D3 and G.sub.M3 as major gangliosides. Other cells and tissues examined also contained G.sub.D3, but usually only in low amounts.