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mam·ma·ry tu·mor vi·rus of mice
one of the mammalian Type B retroviruses, antigenically distinct from the murine leukemia-sarcoma complex, which is associated with adenocarcinomatous tumors of the mammary gland, commonly latent in wild and laboratory mice and causing cancer only in genetically susceptible strains under certain hormonal influences.
Synonym(s): Bittner agent, Bittner milk factor, Bittner virus, mammary cancer virus of mice, milk factor, mouse mammary tumor virus
Farlex Partner Medical Dictionary © Farlex 2012
A substance present in certain strains of mammary cancer-prone mice that is transferred to offspring through milk from the mammary glands. It can induce the development of mammary cancer in suckling mice exposed to the factor.
See also: factor
Medical Dictionary, © 2009 Farlex and Partners