The life of a virus : tobacco mosaic virus as an experimental model 1930 1965 Machine generated contents note: Preface ix Abbreviations for Archival Sources xiii 1. Where Tobacco Mosaic Has Led Us i 2. Viruses Enter the Laboratory 17 3. Crystals at the Threshold of Life 47 4. That Whirligig of Science : The Ultracentrifuge in Virus Research 79 5. The War against Polio 141 6. Viruses and Genes: Phage and TMV as Models 85 7. Taking TMV to Pieces 249 8. TMV as an Experimental Model 317 Bibliography 335 Index 383