  This paper deals with a parabolic-elliptic chemotaxis system with nonlocal
type of source in the whole space. It's proved that the initial value problem
possesses a unique global solution which is uniformly bounded. Here we identify
the exponents regimes of nonlinear reaction and aggregation in such a way that
their scaling and the diffusion term coincide (see Introduction). Comparing to
the classical KS model (without the source term), it's shown that how energy
estimates give natural conditions on the nonlinearities implying the absence of
blow-up for the solution without any restriction on the initial data.
