1. Daniel Nathans with research fellows in the Microbiology Department Lab at Johns Hopkins University School of Medicine

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2. Daniel Nathans and Hamilton Smith in the lab

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3. A Molecular Approach to Carcinogenesis: Dissecting the Genome of a Small Tumor Virus

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4. Letter from Daniel Nathans to Wallace P. Rowe

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5. Letter from Daniel Nathans to Roy D. Schmickel

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6. Specific Cleavage of Simian Virus 40 DNA by Restriction Endonuclease of Hemophilus Influenzae

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7. Letter from Ernest Winocour to Daniel Nathans

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8. Lab notes of electron microscopic images of E. coli B DNA

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9. Letter from Daniel Nathans to David C. Ward

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