Drift–diffusion limit of a model for the dynamics of epithelial and mesenchymal cell monolayers

This paper is devoted to deriving formally the drift–diffusion limit for a kinetic-like model describing the dynamics of a monolayer sample of epithelial and mesenchymal cells, which move via chemotaxis on a flat surface, proliferate, and interact among themselves. The aim is to verify if the macroscopic equations resulting from the underlying model are able to mimic a biologically consistent scenario, where epithelial cells tend to adhere to one another while mesenchymal cells diffuse through the sample.