“…According to the above recipe, one takes into account the corresponding diffusion term (cf., Burton, 1966;De Angelis and Preziosi, 2000;Pettet et al, 2001;Akabani et al, 2002;Ferreira et al, 2002;Kar et al, 2002;Jiang et al, 2002). This extends ODE (7.29) to the following reaction-diffusion equation (RDE) , , , (10.1) where is the diffusion parameter of the cellular fluid (e.g., see (10.4) below) and column is the Hamilton differential expression in the entries of vector , i.e.…”