title: Cyclical changes in susceptibility of a myeloma tumor (LPC-1) to immune destruction. I. Changes in reactivity with cytotoxic T lymphocytes and anti-H-2d sera.
abstract: One of six transplantable ascites tumors of BALB/c mice was found to become periodically resistant to cytotoxic T lymphocytes (CTL). About 12 days after LPC-1, a myeloma tumor, was transplanted it became resistant to lysis by allogenic CTL (anti-H-2d) and by CTL directed to trinitrophenyl groups or minor histocompatibility antigens. Susceptibility to lysis by all of these CTL was regained within 2 to 4 days after transfer of resistant cells to a fresh BALB/c host. These changes were recurrent: in each transplantation cycle the early LPC-1 cells were susceptible and the late cells were resistant to CTL. Analyses with antisera (B10 anti-B10.D2) showed that the serologically recognized products of the H-2d haplotype were reduced about 10-fold on the LPC-1 cells that were resistant to CTL.
mesh_terms: D000818:Animals; D003602:Cytotoxicity, Immunologic; D005260:Female; D006183:H-2 Antigens / Q000276:immunology; D007106:Immune Sera / Q000494:pharmacology*; D007113:Immunity, Innate; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D010507:Periodicity; D010954:Plasmacytoma / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D006183:H-2 Antigens; D007106:Immune Sera