  Universality of interfacial roughness in growing epithelial tissue has
remained a controversial issue. Kardar-Parisi-Zhang (KPZ) and Molecular Beam
Epitaxy (MBE) universality classes have been reported among other behaviors
including total lack of universality. Here, we utilize a kinetic division model
for deformable cells to investigate cell-colony scaling. With seemingly minor
model changes, it can reproduce both KPZ- and MBE-like scaling in
configurations that mimic the respective experiments. This result neutralizes
the apparent scaling controversy. It can be speculated that this diversity in
growth behavior is beneficial for efficient evolution and versatile growth
dynamics.
