Hi,
I checked the tumor growth model in the library of Simbiology. I noticed if I increase the drug concentration to very high values, the proliferating tumor mass, x1, never goes to zero or negative values. This happens also when I increase the simulation time or the number of RepeatCount . Would you please tell me what part of the model prevents that from happening?
I developed the same model for different type of drug. I have the same solver settings as in the original model found in the library. I checked carefully that everything is the same as much as possible. However, the tumor species, x1, goes to minus values if I increase the simulation time, which doesn't happen with the original model. Therefore, I receive error message and I can't perform the simulation. Does it make sense that it goes to negative values? because for long time, tumor mass is kept taking out in a rate defined by the killing rate and at some point the species will go to negative value. Could you please help in correcting me and clarifying the situation?
Thanks,
Day-light
