Asymptotic Behavior Analysis of a Fractional-Order Tumor-Immune Interaction Model with Immunotherapy

Table 1

Parameters and their biological meanings.

Parameter	Biological meaning
	Antigenicity of the tumor
	Natural average lifespan
	Uptake velocity when all sites are saturated by the substrate
	Treatment by an external source of effector cells (ACI)
	Net per capita growth rate
	Environmental carrying capacity
	Half saturation constant
	Loss/degraded rate of IL-2
	Treatment by an external input of IL-2 into the system (IL-2)