TY - CHAP M1 - Book, Section TI - Tumor Growth, Microenvironment, Metabolism, and Hypoxia A1 - Dhani, Neesha A1 - Hill, Richard P. A1 - Tannock, Ian F. A2 - Harrington, Lea A. A2 - Tannock, Ian F. A2 - Hill, Richard P. A2 - Cescon, David W. PY - 2021 T2 - The Basic Science of Oncology, 6e AB - Tumors grow because the homeostatic mechanisms that maintain the appropriate number of cells in normal tissues are defective, leading to an imbalance between cell proliferation and cell death and to expansion of the cell population. Methods based on autoradiography with tritiated thymidine in the 1950s and 1960s, and the subsequent application of flow cytometry, have allowed a detailed analysis of tumor growth in terms of the kinetics of proliferation of the constituent cells. The proliferative rate of tumor cells varies widely between tumors; slowly proliferating or nonproliferating cells are common, and there is often a high rate of cell death. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/17 UR - hemonc.mhmedical.com/content.aspx?aid=1179324690 ER -