Cellular kinetics,cell cycles and cell killing |
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Authors: | George M. Hahn |
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Affiliation: | (1) Department of Radiology, Stanford University School of Medicine, Palo Alto, California, USA |
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Abstract: | Summary Techniques available for the calculation of the time variation of the number of viable mammaliar cells in a cell population are reviewed. Events in the course of the cell's growth may include one or more exposures to ionizing radiations or other cytotoxic agents. The dependence of cell killing upon the cell's position in the cell cycle is emphasized, and a unified model for calculation of cell kinetics and cell survival is discussed. For a cell population not limited in growth by contact inhibition or by nutritional factors, experimental data agree with predictions of the model.The possibility of utilizing the model to arrive at optimum treatment schedules for the management of some malignant diseases is discussed. The conclusion drawn is that the state of knowledge with respect to cellular events in solid tumors is such as to leave most such applications in the realm of speculation.This work was supported by the National Institutes of Health, United States Public Health Service, under Grants CA 5008 and CA 4542. |
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