In Vitro Susceptibility of Mink Lung Cells to the Mouse Mammary Tumor Virus2

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Abstract
Lung cells from mink embryos were infected in vitro with a purified mammary tumor virus isolated from RIII mouse milk. Specific virus antigen at the cell surface was detected by membrane immunofluorescence; B-type virions budding from the cell membrane were seen by electron microscopy. Nucleic acid hybridization confirmed replication and specificity of the virus produced.