By considering solution curve's or surface's composition of the functions of several variables and constructing the suitable lower-upper solution pair for the following special diffusive Hematopoiesis model eP (t, x)/et= ΔP (t, x)- γP (t, x) +m Σi=1 βiP (t-τi,x)/1+Pn (t-τi,x) (0.1)under Neumann boundary condition, sufficient conditions are provided for the oscillation of the positive equilibrium for (0.1). Moreover, these results extend or complement existing results.
