Model on cell movement, growth, differentiation and de-differentiation: Reaction-diffusion equation and wave propagationMao-Xiang Wang, Yu-Jung Li, Pik-Yin Lai and C. K. ChanEur. Phys. J. E, 36 6 (2013) 65DOI: https://doi.org/10.1140/epje/i2013-13065-4