Abstract
Gross virus-induced lymphoma cells express strong virus-associated (Gross murine leukemia virus [G-MuLV]) antigens and are consistently rejected when grafted in normal adult syngeneic rats. By contrast, similar grafts are tolerated and allowed to grow progressively by rats that have been injected at birth with deaggregated G-MuLV antigens. However, the tolerance induced by this procedure is only partial as the grafted lymphoma cells lose their G-MuLV membrane antigens. These cells showing an antigenic disjunction, with negative membrane and positive cytoplasmic G-MuLV antigenic expression, become transplantable in normal-nonconditioned adult recipients. By further grafting, the expression of cytoplasmic G-MuLV antigens is similarly lost while the lymphoma cells substantially increase their transplantability, rate of growth, and capacity for metastasis.
MeSH Terms
AKR murine leukemia virus/immunology
Animals
Animals, Newborn
Antigens, Neoplasm/analysis
Bromodeoxyuridine/pharmacology
Cell Membrane/immunology
Clone Cells/drug effects
Complement Fixation Tests
Cytoplasm/immunology
Cytotoxicity Tests, Immunologic
Fluorescent Antibody Technique
Immune Tolerance
Immunodiffusion
Lymphoma/immunology
Microscopy, Electron
Neoplasm Transplantation
Neoplasms, Experimental/immunology
RNA Viruses/growth & development
Rats
Rats, Inbred WF
Thymus Gland/immunology
Transplantation, Homologous
Virus Replication
Chemicals
Antigens, Neoplasm
Bromodeoxyuridine
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Ioachim H L
Keller S E
Dorsett B H
Pearse A
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