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Mutagenesis
In addition to simulating the DSB formation and rejoining kinetics, the Virtual Cell will output estimates of the expected number of accumulated lethal and non-lethal mutations as a function of time. Here, the term mutation means point mutations as well as larger-scale rearrangements of the DNA (i.e., chromosome aberrations). Illustrative examples of the time-dependent accumulation of lethal mutations as a function of time during and after irradiation are given below. All of the examples are based on representative repair-misrepair (RMR) model parameters for Chinese Hamster Ovary (CHO) cells.
 

Figure 1. Split-dose exposure
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DSB per cell during and after a split-dose exposure

Figure 2. External Beam Radiation Treatment
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External beam radiation therapy treatment (2 Gy x 30 days)

Figure 3. 125I Brachytherapy
(click on figure to enlarge)DSB formation and repair during 125I brachytherapy
 

Figure 4. Combined External Beam and
125I Brachytherapy Radiation Treatment

(click on figure to enlarge)
Combined external beam and brachytherapy radiation treatment


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Last updated: 10 June, 2011
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