RT Journal Article T1 From microscopic to macroscopic description of multicellular systems and biological growing tissues A1 Bellomo, Nicola A1 Bellouquid, Abdelghani A1 Herrero, Miguel A. AB This paper presents an asymptotic theory for a large class of Boltzmann-type equations suitable to model the evolution of multicellular systems in biology. The mathematical approach described herein shows how various types of diffusion phenomena, linear and nonlinear, can be obtained in suitable asymptotic limits. Time scaling related to cell movement and biological activity are shown to play a crucial role in determining the macroscopic equations corresponding to each case. PB Pergamon-Elsevier Science Ltd SN 0898-1221 YR 2007 FD 2007-02 LK https://hdl.handle.net/20.500.14352/50095 UL https://hdl.handle.net/20.500.14352/50095 LA eng NO EU Network Modelling, Mathematical Methods and Computer Simulation of Tumor Growth and Therapy NO Italian Council of University and Scientific Research NO Universidad Complutense Acción Especial DS Docta Complutense RD 26 nov 2025