Front Cover; Advances in Cancer Research, Volume 33; Copyright Page; Contents; Contributors to Volume 33; Chapter 1. The Cultivation of Animal Cells in the Chemostat: Application to the Study of Tumor Cell Multiplication; Chapter 2. Ectopic Hormone Production Viewed as an Abnormality in Regulation of Gene Expression; Chapter 3. The Role of Viruses in Human Tumors; Chapter 4. The Oncogenic Function of Mammalian Sarcoma Viruses; Chapter 5. Recent Progress in Research on Esophageal Cancer in China; Chapter 6. Mass Transport in Tumors: Characterization and Applications to Chemotherapy; Index.