A Novel Method for Simulating the Extracellular Matrix in Models of Tumour Growth

Table 1

Variables used in the hybrid model: The variable of the dimensional system ((1a), (1b), (1c)) and ((2a), (2b), (2c), (2d)), a description, their units, the computation for the corresponding nondimensional parameters and references.

Variable 𝑦	Description	Unit	Formula of 𝑦	Reference
𝑐(𝐱,𝑡)	Cancer cell	Cells cm^−3	𝑐/𝑐0	[16, 23]
𝑢(𝐱,𝑡)	Nutrient concentration	M O2 cm^−3	𝑢/𝑢0	[16, 23]
𝑓(𝐱,𝑡)	ECM	𝑀	𝑓/𝑓0	[16, 23]
𝑚(𝐱,𝑡)	MDE	𝑀	𝑚/𝑚0	[16, 19, 23]