A New Mathematical Model for Controlling Tumor Growth Based on Microenvironment Acidity and Oxygen Concentration

Table 1

Four assumed states of a cell in the proposed model.

State ()	Type of cell	Symbol	Color
0	Normal (healthy) cell or empty space	N or Em
1	Proliferating tumor cell	PC
2	Quiescent tumor cell	QC or NT
3	Necrotic cell	NeC