Monoclonal antibodies suitable for plum pox virus determination.

Monoclonal antibodies (MAbs) to plum pox virus (PPV) were obtained after immunization of BALB/c mice with purified PPV-W isolate. Spleen cells from a mouse showing a high serum titer were used for fusion with Sp2/0-Ag14 myeloma cells. Culture supernatants were screened for specific antibody production against PPV-W isolate using indirect ELISA.

A monoclonal antibody applicable for determination of C-peptide of human proinsulin by RIA.

BALB/c, (BALB/c x B10.A)F1 and (BALB/c x B10)F1 hybrid mice were immunized with C-peptide of human proinsulin. The (BALB/c x B10.

Monoclonal antibodies against human leucocyte antigens. IV. Antibodies against subunits of the LFA-1 (CD11a/CD18) leucocyte-adhesion glycoprotein.

Six monoclonal antibodies were prepared that recognize a broadly expressed antigen composed of noncovalently associated 95 kDa and 180 kDa subunits. Antibodies MEM-25, MEM-83 and MEM-95 are shown to react with a determinant(s) present on the isolated larger subunit identified as the CD11a glycoprotein, MEM-48 reacts with the isolated smaller subunit which is identical to the CD18 glycoprotein. Antibodies MEM-30 and MEM-94 recognize probably a determinant in the CD11a/CD18 complex (i.

Characterization of a broadly expressed human leucocyte surface antigen MEM-43 anchored in membrane through phosphatidylinositol.

A monoclonal antibody MEM-43 was prepared, which recognizes an antigen expressed on all peripheral blood leucocytes, on erythrocytes and several cell lines, but is absent from U937, Nalm-6, Daudi and Raji cell lines. The antigen isolated by immunoaffinity chromatography from several cell lines is an 18,000-25,000 mol. wt glycoprotein.