Research Article

Dynamics of Breast Cancer under Different Rates of Chemoradiotherapy

Table 2

Description of parameters.

EquationParameterDescription

Growth rate of tumor-sensitive cells
Carrying capacity of tumor cells
Tumor cell death rate due to immune cells
μMutation rate
Chemotherapy kill rate coefficient for tumor-sensitive cells
Radiotherapy kill rate coefficient for tumor-sensitive cells

Growth rate of tumor-resistant cells
Chemotherapy kill rate coefficient for tumor-resistant cells
Radiotherapy kill rate coefficient for tumor-resistant cells

Growth rate of normal cells
Carrying capacity of normal cells
kActivation rate of tumor cells into normal cells
Critical size of tumor cells
Chemotherapy kill rate coefficient for normal cells
Radiotherapy kill rate coefficient for normal cells

sConstant source of immune cells
dNatural death rate of immune cells
Maximum immune response rate
Steepness of immune rate
Immune cells death rate due to tumor cell response
Chemotherapy kill rate coefficient for immune cells
Radiotherapy kill rate coefficient for immune cells

Chemotherapy drug dose
Chemotherapy drug decay rate

Radiotherapy drug dose
Radiotherapy drug decay rate