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Transfection of Chicken Embryo Cells with DNA Extracted from Avian Virus-Producing Neoplastic Cells

Laboratoire d'Immunologie, Institut Gustave-Roussy, Villejuif, France

ABSTRACT

DNA isolated from avian virus-producing leukemic myeloblasts induced the production of viruses, but not morphological transformation, in cultivated chicken fibroblasts. The recovered virus had the same biological characteristics as the original avian myeloblastosis virus (AMV) and produced myeloblastosis and nephroblastomas when injected into chickens. Neutralization experiments with chicken anti-AMV-BAI strain A sera showed an antigenic community between the DNA-transfected virus and the original virus. Virus induced in fibroblasts after treatment with DNA from a viral nephroblastic nephroblastoma line only gave nephroblastoma when injected into chicken. Treatment of chicken embryo cells with DNA extracted from normal chicken embryos did not induce viral production.