Figure 10. Metastatic growth under different values of  .
.
The primary tumor is held to a steady state by the immune response, and metastases are seeded beginning 6 months into the simulation. For the lowest value of  , a single metastatic lesion forms; moderate to high values lead to suppression of all metastases, while a very high
, a single metastatic lesion forms; moderate to high values lead to suppression of all metastases, while a very high  overwhelms the immune response, leading to widespread metastatic growth. Note that in (C) and (D) the immune response to the metastases can cause perturbations in the primary tumor size, but does not change the overall behavior. (A)
 overwhelms the immune response, leading to widespread metastatic growth. Note that in (C) and (D) the immune response to the metastases can cause perturbations in the primary tumor size, but does not change the overall behavior. (A)  . (B)
. (B)  . (C)
. (C)  . (D)
. (D)  .
.
