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Start Over Subjects Mammary Tumor Virus, Mouse ✖Remove constraint Subjects: Mammary Tumor Virus, Mouse Titles Letter from Harold Varmus to Lloyd J. Old, Sloan-Kettering Institute for Cancer Research ✖Remove constraint Titles: Letter from Harold Varmus to Lloyd J. Old, Sloan-Kettering Institute for Cancer Research Dates by Range 1950-1999 ✖Remove constraint Dates by Range: 1950-1999

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  • Letter from Harold Varmus to Lloyd J. Old, Sloan-Kettering Institute for Cancer Research1