“…In the present work, motivated by the migration of cells in three‐dimensional domains
bounded by closed surfaces
, we consider the Fickian diffusion equation as a starting point to account for cellular movement. Our main purpose is to push forward alternative procedures, which could complement the already existing ones used in other scenarios (see, e.g., previous works
22–26 ), for computing the mean first passage time (MFPT) for migrating cells to proceed from a generic point
inside a finite domain
to any other point
also inside
, at which it is absorbed. This problem is relevant when quantifying the characteristic times during which moving cells remain within a well‐defined tissue before transitioning to other organs.…”