1. [Notebook entry on] "Repeat of Experiment to Determine Effect of RNase on Microsomal RNA"

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2. [Notebook entry on] "Rate of Hydrolysis of 'Yeast RNA' by Prostatic Acid Phosphatase"

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3. [Notebook entry on] "Model Building"

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4. [Notebook entry on] "Egg White Column"

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5. [Notebook entry on] "Effect of RNase on Microsomal RNA"

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6. [Notebook entry on] "DNA"

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7. [Notebook entry on] "Centrifuging Egg White"

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8. [Notebook entry on] "Cell Walls"

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9. [Notebook entry on] "Cell Wall Prep"

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10. [Notebook entry on] "Action of RNase on Microsomal RNA"

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11. The Computer, the Eye, the Soul

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12. Some Aspects of Medical Research: The Genetic Code

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13. Fragment of speaking notes on DNA replication

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14. Fragment of notes on a double helix model for DNA

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15. Developmental Biology

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16. Detail from notes on the structure of DNA

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17. Detail from group portrait of physics research students at the Cavendish Laboratory

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18. Detail from composite photograph of Francis Crick lecturing

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